diff --git a/API/Controllers/JobController.cs b/API/Controllers/JobController.cs
index 303f36a..6b71294 100644
--- a/API/Controllers/JobController.cs
+++ b/API/Controllers/JobController.cs
@@ -214,7 +214,7 @@ public class JobController(PgsqlContext context) : Controller
     /// <response code="202">Job modified</response>
     /// <response code="400">Malformed request</response>
     /// <response code="404">Job with ID not found</response>
-    /// <response code="500">Internal Error</response>
+    /// <response code="500">Error during Database Operation</response>
     [HttpPatch("{id}/")]
     [ProducesResponseType<Job>(Status202Accepted)]
     [ProducesResponseType(Status400BadRequest)]
@@ -247,7 +247,7 @@ public class JobController(PgsqlContext context) : Controller
     /// <response code="202">Job started</response>
     /// <response code="404">Job with ID not found</response>
     /// <response code="409">Job was already running</response>
-    /// <response code="500">Internal Error</response>
+    /// <response code="500">Error during Database Operation</response>
     [HttpPost("{id}/Start")]
     [ProducesResponseType(Status202Accepted)]
     [ProducesResponseType(Status404NotFound)]
@@ -276,19 +276,10 @@ public class JobController(PgsqlContext context) : Controller
     /// Stops the Job with the requested ID
     /// </summary>
     /// <param name="id">Job-ID</param>
-    /// <response code="202">Job started</response>
-    /// <response code="404">Job with ID not found</response>
-    /// <response code="409">Job was not running</response>
-    /// <response code="500">Internal Error</response>
     /// <remarks>NOT IMPLEMENTED</remarks>
-    [ProducesResponseType(Status202Accepted)]
-    [ProducesResponseType(Status404NotFound)]
-    [ProducesResponseType(Status409Conflict)]
-    [ProducesResponseType(Status500InternalServerError)]
     [HttpPost("{id}/Stop")]
     public IActionResult StopJob(string id)
     {
         throw new NotImplementedException();
-        return NotFound(new ProblemResponse("Not implemented"));
     }
 }
\ No newline at end of file
diff --git a/API/Controllers/LibraryConnectorController.cs b/API/Controllers/LibraryConnectorController.cs
index 69d034e..1660e14 100644
--- a/API/Controllers/LibraryConnectorController.cs
+++ b/API/Controllers/LibraryConnectorController.cs
@@ -15,7 +15,7 @@ public class LibraryConnectorController(PgsqlContext context) : Controller
     /// <summary>
     /// Gets all configured Library-Connectors
     /// </summary>
-    /// <returns>Array of configured Library-Connectors</returns>
+    /// <response code="200"></response>
     [HttpGet]
     [ProducesResponseType<LibraryConnector[]>(Status200OK)]
     public IActionResult GetAllConnectors()
@@ -28,7 +28,8 @@ public class LibraryConnectorController(PgsqlContext context) : Controller
     /// Returns Library-Connector with requested ID
     /// </summary>
     /// <param name="id">Library-Connector-ID</param>
-    /// <returns>Library-Connector</returns>
+    /// <response code="200"></response>
+    /// <response code="404">Connector with ID not found.</response>
     [HttpGet("{id}")]
     [ProducesResponseType<LibraryConnector>(Status200OK)]
     [ProducesResponseType(Status404NotFound)]
@@ -46,7 +47,8 @@ public class LibraryConnectorController(PgsqlContext context) : Controller
     /// Creates a new Library-Connector
     /// </summary>
     /// <param name="libraryConnector">Library-Connector</param>
-    /// <returns>Nothing</returns>
+    /// <response code="200"></response>
+    /// <response code="500">Error during Database Operation</response>
     [HttpPut]
     [ProducesResponseType(Status200OK)]
     [ProducesResponseType<string>(Status500InternalServerError)]
@@ -68,7 +70,9 @@ public class LibraryConnectorController(PgsqlContext context) : Controller
     /// Deletes the Library-Connector with the requested ID
     /// </summary>
     /// <param name="id">Library-Connector-ID</param>
-    /// <returns>Nothing</returns>
+    /// <response code="200"></response>
+    /// <response code="404">Connector with ID not found.</response>
+    /// <response code="500">Error during Database Operation</response>
     [HttpDelete("{id}")]
     [ProducesResponseType(Status200OK)]
     [ProducesResponseType(Status404NotFound)]
diff --git a/API/Controllers/MangaConnectorController.cs b/API/Controllers/MangaConnectorController.cs
index 31d5a81..9c92ce2 100644
--- a/API/Controllers/MangaConnectorController.cs
+++ b/API/Controllers/MangaConnectorController.cs
@@ -15,7 +15,7 @@ public class MangaConnectorController(PgsqlContext context) : Controller
     /// <summary>
     /// Get all available Connectors (Scanlation-Sites)
     /// </summary>
-    /// <response code="200">List of all Connectors</response>
+    /// <response code="200"></response>
     [HttpGet("GetConnectors")]
     [ProducesResponseType<MangaConnector[]>(Status200OK)]
     public IActionResult GetConnectors()
@@ -27,7 +27,7 @@ public class MangaConnectorController(PgsqlContext context) : Controller
     /// <summary>
     /// Get all enabled Connectors (Scanlation-Sites)
     /// </summary>
-    /// <response code="200">List of all enabled Connectors</response>
+    /// <response code="200"></response>
     [HttpGet("GetConnectors/enabled")]
     [ProducesResponseType<MangaConnector[]>(Status200OK)]
     public IActionResult GetEnabledConnectors()
@@ -39,7 +39,7 @@ public class MangaConnectorController(PgsqlContext context) : Controller
     /// <summary>
     /// Get all disabled Connectors (Scanlation-Sites)
     /// </summary>
-    /// <response code="200">List of all enabled Connectors</response>
+    /// <response code="200"></response>
     [HttpGet("GetConnectors/disabled")]
     [ProducesResponseType<MangaConnector[]>(Status200OK)]
     public IActionResult GetDisabledConnectors()
diff --git a/API/Controllers/MangaController.cs b/API/Controllers/MangaController.cs
index 9863a17..c274014 100644
--- a/API/Controllers/MangaController.cs
+++ b/API/Controllers/MangaController.cs
@@ -14,7 +14,7 @@ public class MangaController(PgsqlContext context) : Controller
     /// <summary>
     /// Returns all cached Manga
     /// </summary>
-    /// <returns>Array of Manga</returns>
+    /// <response code="200"></response>
     [HttpGet]
     [ProducesResponseType<Manga[]>(Status200OK)]
     public IActionResult GetAllManga()
@@ -27,7 +27,7 @@ public class MangaController(PgsqlContext context) : Controller
     /// Returns all cached Manga with IDs
     /// </summary>
     /// <param name="ids">Array of Manga-IDs</param>
-    /// <returns>Array of Manga</returns>
+    /// <response code="200"></response>
     [HttpPost("WithIDs")]
     [ProducesResponseType<Manga[]>(Status200OK)]
     public IActionResult GetManga([FromBody]string[] ids)
@@ -40,42 +40,41 @@ public class MangaController(PgsqlContext context) : Controller
     /// Return Manga with ID
     /// </summary>
     /// <param name="id">Manga-ID</param>
-    /// <returns>Manga</returns>
+    /// <response code="200"></response>
+    /// <response code="404">Manga with ID not found</response>
     [HttpGet("{id}")]
     [ProducesResponseType<Manga>(Status200OK)]
     [ProducesResponseType(Status404NotFound)]
     public IActionResult GetManga(string id)
     {
         Manga? ret = context.Manga.Find(id);
-        return (ret is not null) switch
-        {
-            true => Ok(ret),
-            false => NotFound()
-        };
+        if (ret is null)
+            return NotFound();
+        return Ok(ret);
     }
 
     /// <summary>
     /// Delete Manga with ID
     /// </summary>
     /// <param name="id">Manga-ID</param>
-    /// <returns>Nothing</returns>
+    /// <response code="200"></response>
+    /// <response code="404">Manga with ID not found</response>
+    /// <response code="500">Error during Database Operation</response>
     [HttpDelete("{id}")]
     [ProducesResponseType(Status200OK)]
     [ProducesResponseType(Status404NotFound)]
-    [ProducesResponseType(Status500InternalServerError)]
+    [ProducesResponseType<string>(Status500InternalServerError)]
     public IActionResult DeleteManga(string id)
     {
         try
         {
             Manga? ret = context.Manga.Find(id);
-            switch (ret is not null)
-            {
-                case true:
-                    context.Remove(ret);
-                    context.SaveChanges();
-                    return Ok();
-                case false: return NotFound();
-            }
+            if (ret is null)
+                return NotFound();
+            
+            context.Remove(ret);
+            context.SaveChanges();
+            return Ok();
         }
         catch (Exception e)
         {
@@ -87,28 +86,29 @@ public class MangaController(PgsqlContext context) : Controller
     /// Returns URL of Cover of Manga
     /// </summary>
     /// <param name="id">Manga-ID</param>
-    /// <returns>URL of Cover</returns>
+    /// <remarks>NOT IMPLEMENTED</remarks>
     [HttpGet("{id}/Cover")]
-    [ProducesResponseType<string>(Status500InternalServerError)]
     public IActionResult GetCover(string id)
     {
-        return StatusCode(500, "Not implemented"); //TODO
+        throw new NotImplementedException();
     }
 
     /// <summary>
     /// Returns all Chapters of Manga
     /// </summary>
     /// <param name="id">Manga-ID</param>
-    /// <returns>Array of Chapters</returns>
+    /// <response code="200"></response>
+    /// <response code="404">Manga with ID not found</response>
     [HttpGet("{id}/Chapters")]
     [ProducesResponseType<Chapter[]>(Status200OK)]
-    [ProducesResponseType<string>(Status404NotFound)]
+    [ProducesResponseType(Status404NotFound)]
     public IActionResult GetChapters(string id)
     {
         Manga? m = context.Manga.Find(id);
         if (m is null)
-            return NotFound("Manga could not be found");
-        Chapter[] ret = context.Chapters.Where(c => c.ParentManga.MangaId == m.MangaId).ToArray();
+            return NotFound();
+        
+        Chapter[] ret = context.Chapters.Where(c => c.ParentMangaId == m.MangaId).ToArray();
         return Ok(ret);
     }
     
@@ -116,35 +116,46 @@ public class MangaController(PgsqlContext context) : Controller
     /// Returns the latest Chapter of requested Manga
     /// </summary>
     /// <param name="id">Manga-ID</param>
-    /// <returns>Latest Chapter</returns>
+    /// <response code="200"></response>
+    /// <response code="204">No available chapters</response>
+    /// <response code="404">Manga with ID not found.</response>
+    /// <response code="500">Could not retrieve the maximum chapter-number</response>
     [HttpGet("{id}/Chapter/Latest")]
     [ProducesResponseType<Chapter>(Status200OK)]
-    [ProducesResponseType<string>(Status404NotFound)]
+    [ProducesResponseType(Status204NoContent)]
+    [ProducesResponseType(Status404NotFound)]
+    [ProducesResponseType<string>(Status500InternalServerError)]
     public IActionResult GetLatestChapter(string id)
     {
         Manga? m = context.Manga.Find(id);
         if (m is null)
-            return NotFound("Manga could not be found");
-        List<Chapter> chapters = context.Chapters.Where(c => c.ParentManga.MangaId == m.MangaId).ToList();
+            return NotFound();
+        
+        List<Chapter> chapters = context.Chapters.Where(c => c.ParentMangaId == m.MangaId).ToList();
+        if (chapters.Count == 0)
+            return NoContent();
+        
         Chapter? max = chapters.Max();
         if (max is null)
-            return NotFound("Chapter could not be found");
+            return StatusCode(500, "Max chapter could not be found");
+        
         return Ok(max);
     }
     
     /// <summary>
     /// Configure the cut-off for Manga
     /// </summary>
-    /// <remarks>This is important for the DownloadNewChapters-Job</remarks>
     /// <param name="id">Manga-ID</param>
-    /// <returns>Nothing</returns>
+    /// <response code="200"></response>
+    /// <response code="404">Manga with ID not found.</response>
     [HttpPatch("{id}/IgnoreChaptersBefore")]
     [ProducesResponseType<float>(Status200OK)]
+    [ProducesResponseType(Status404NotFound)]
     public IActionResult IgnoreChaptersBefore(string id)
     {
         Manga? m = context.Manga.Find(id);
         if (m is null)
-            return NotFound("Manga could not be found");
+            return NotFound();
         return Ok(m.IgnoreChapterBefore);
     }
     
@@ -153,11 +164,10 @@ public class MangaController(PgsqlContext context) : Controller
     /// </summary>
     /// <param name="id">Manga-ID</param>
     /// <param name="folder">New Directory-Path</param>
-    /// <returns>Nothing</returns>
+    /// <remarks>NOT IMPLEMENTED</remarks>
     [HttpPost("{id}/MoveFolder")]
-    [ProducesResponseType<string>(Status500InternalServerError)]
     public IActionResult MoveFolder(string id, [FromBody]string folder)
     {
-        return StatusCode(500, "Not implemented"); //TODO
+        throw new NotImplementedException();
     }
 }
\ No newline at end of file
diff --git a/API/Controllers/NotificationConnectorController.cs b/API/Controllers/NotificationConnectorController.cs
index 20315d6..58381d4 100644
--- a/API/Controllers/NotificationConnectorController.cs
+++ b/API/Controllers/NotificationConnectorController.cs
@@ -15,7 +15,7 @@ public class NotificationConnectorController(PgsqlContext context) : Controller
     /// <summary>
     /// Gets all configured Notification-Connectors
     /// </summary>
-    /// <returns>Array of configured Notification-Connectors</returns>
+    /// <response code="200"></response>
     [HttpGet]
     [ProducesResponseType<NotificationConnector[]>(Status200OK)]
     public IActionResult GetAllConnectors()
@@ -28,7 +28,8 @@ public class NotificationConnectorController(PgsqlContext context) : Controller
     /// Returns Notification-Connector with requested ID
     /// </summary>
     /// <param name="id">Notification-Connector-ID</param>
-    /// <returns>Notification-Connector</returns>
+    /// <response code="200"></response>
+    /// <response code="404">NotificationConnector with ID not found</response>
     [HttpGet("{id}")]
     [ProducesResponseType<NotificationConnector>(Status200OK)]
     [ProducesResponseType(Status404NotFound)]
@@ -46,7 +47,8 @@ public class NotificationConnectorController(PgsqlContext context) : Controller
     /// Creates a new Notification-Connector
     /// </summary>
     /// <param name="notificationConnector">Notification-Connector</param>
-    /// <returns>Nothing</returns>
+    /// <response code="201"></response>
+    /// <response code="500">Error during Database Operation</response>
     [HttpPut]
     [ProducesResponseType<NotificationConnector[]>(Status200OK)]
     [ProducesResponseType<string>(Status500InternalServerError)]
@@ -68,7 +70,9 @@ public class NotificationConnectorController(PgsqlContext context) : Controller
     /// Deletes the Notification-Connector with the requested ID
     /// </summary>
     /// <param name="id">Notification-Connector-ID</param>
-    /// <returns>Nothing</returns>
+    /// <response code="200"></response>
+    /// <response code="404">NotificationConnector with ID not found</response>
+    /// <response code="500">Error during Database Operation</response>
     [HttpDelete("{id}")]
     [ProducesResponseType(Status200OK)]
     [ProducesResponseType(Status404NotFound)]
@@ -78,14 +82,12 @@ public class NotificationConnectorController(PgsqlContext context) : Controller
         try
         {
             NotificationConnector? ret = context.NotificationConnectors.Find(id);
-            switch (ret is not null)
-            {
-                case true:
-                    context.Remove(ret);
-                    context.SaveChanges();
-                    return Ok();
-                case false: return NotFound();
-            }
+            if(ret is null)
+                return NotFound();
+            
+            context.Remove(ret);
+            context.SaveChanges();
+            return Ok();
         }
         catch (Exception e)
         {
diff --git a/API/Controllers/SearchController.cs b/API/Controllers/SearchController.cs
index 3c45c8d..6c539f7 100644
--- a/API/Controllers/SearchController.cs
+++ b/API/Controllers/SearchController.cs
@@ -18,14 +18,17 @@ public class SearchController(PgsqlContext context) : Controller
     /// Initiate a search for a Manga on all Connectors
     /// </summary>
     /// <param name="name">Name/Title of the Manga</param>
-    /// <returns>Array of Manga</returns>
+    /// <response code="200"></response>
+    /// <response code="500">Error during Database Operation</response>
     [HttpPost("{name}")]
-    [ProducesResponseType<Manga[]>(Status500InternalServerError)]
+    [ProducesResponseType<Manga[]>(Status200OK)]
+    [ProducesResponseType<string>(Status500InternalServerError)]
     public IActionResult SearchMangaGlobal(string name)
     {
         List<(Manga, List<Author>?, List<MangaTag>?, List<Link>?, List<MangaAltTitle>?)> allManga = new();
         foreach (MangaConnector contextMangaConnector in context.MangaConnectors)
             allManga.AddRange(contextMangaConnector.GetManga(name));
+        
         List<Manga> retMangas = new();
         foreach ((Manga? manga, List<Author>? authors, List<MangaTag>? tags, List<Link>? links, List<MangaAltTitle>? altTitles) in allManga)
         {
@@ -35,9 +38,9 @@ public class SearchController(PgsqlContext context) : Controller
                 if(add is not null)
                     retMangas.Add(add);
             }
-            catch (DbUpdateException)
+            catch (Exception e)
             {
-                return StatusCode(500, new ProblemResponse("An error occurred while processing your request."));
+                return StatusCode(500, e);
             }
         }
         return Ok(retMangas.ToArray());
@@ -48,16 +51,23 @@ public class SearchController(PgsqlContext context) : Controller
     /// </summary>
     /// <param name="id">Manga-Connector-ID</param>
     /// <param name="name">Name/Title of the Manga</param>
-    /// <returns>Manga</returns>
+    /// <response code="200"></response>
+    /// <response code="404">MangaConnector with ID not found</response>
+    /// <response code="406">MangaConnector with ID is disabled</response>
+    /// <response code="500">Error during Database Operation</response>
     [HttpPost("{id}/{name}")]
     [ProducesResponseType<Manga[]>(Status200OK)]
-    [ProducesResponseType<ProblemResponse>(Status404NotFound)]
-    [ProducesResponseType<ProblemResponse>(Status500InternalServerError)]
+    [ProducesResponseType(Status404NotFound)]
+    [ProducesResponseType(Status406NotAcceptable)]
+    [ProducesResponseType<string>(Status500InternalServerError)]
     public IActionResult SearchManga(string id, string name)
     {
         MangaConnector? connector = context.MangaConnectors.Find(id);
         if (connector is null)
-            return NotFound(new ProblemResponse("Connector not found."));
+            return NotFound();
+        else if (connector.Enabled is false)
+            return StatusCode(406);
+        
         (Manga, List<Author>?, List<MangaTag>?, List<Link>?, List<MangaAltTitle>?)[] mangas = connector.GetManga(name);
         List<Manga> retMangas = new();
         foreach ((Manga? manga, List<Author>? authors, List<MangaTag>? tags, List<Link>? links, List<MangaAltTitle>? altTitles) in mangas)
@@ -68,15 +78,15 @@ public class SearchController(PgsqlContext context) : Controller
                 if(add is not null)
                     retMangas.Add(add);
             }
-            catch (DbUpdateException e)
+            catch (Exception e)
             {
-                return StatusCode(500, new ProblemResponse("An error occurred while processing your request.", e.Message));
+                return StatusCode(500, e.Message);
             }
         }
 
         return Ok(retMangas.ToArray());
     }
-
+    
     private Manga? AddMangaToContext(Manga? manga, List<Author>? authors, List<MangaTag>? tags, List<Link>? links,
         List<MangaAltTitle>? altTitles)
     {
@@ -144,7 +154,7 @@ public class SearchController(PgsqlContext context) : Controller
             context.Manga.Update(existing);
         else
             context.Manga.Add(manga);
-        
+
         context.SaveChanges();
         return existing ?? manga;
     }
diff --git a/API/ProblemResponse.cs b/API/ProblemResponse.cs
deleted file mode 100644
index b189690..0000000
--- a/API/ProblemResponse.cs
+++ /dev/null
@@ -1,3 +0,0 @@
-namespace API;
-
-public record ProblemResponse(string title, string? message = null);
\ No newline at end of file
diff --git a/API/TrangaSettings.cs b/API/TrangaSettings.cs
index 8fb7782..87d1c49 100644
--- a/API/TrangaSettings.cs
+++ b/API/TrangaSettings.cs
@@ -118,7 +118,7 @@ public static class TrangaSettings
         ExportSettings();
     }
 
-    public static void ResetRateLimits()
+    public static void ResetRequestLimits()
     {
         requestLimits = DefaultRequestLimits;
         ExportSettings();