diff --git a/UmlautAdaptarr/Controllers/CapsController.cs b/UmlautAdaptarr/Controllers/CapsController.cs
index 9dc8fc3..e8df172 100644
--- a/UmlautAdaptarr/Controllers/CapsController.cs
+++ b/UmlautAdaptarr/Controllers/CapsController.cs
@@ -13,7 +13,7 @@ namespace UmlautAdaptarr.Controllers
         [HttpGet]
         public async Task<IActionResult> Caps([FromRoute] string options, [FromRoute] string domain, [FromQuery] string? apikey)
         {
-            if (!UrlUtilities.IsValidDomain(domain))
+            if (!domain.StartsWith("localhost") && !UrlUtilities.IsValidDomain(domain))
             {
                 return NotFound($"{domain} is not a valid URL.");
             }
diff --git a/UmlautAdaptarr/Controllers/SearchController.cs b/UmlautAdaptarr/Controllers/SearchController.cs
index 63f2f03..9961616 100644
--- a/UmlautAdaptarr/Controllers/SearchController.cs
+++ b/UmlautAdaptarr/Controllers/SearchController.cs
@@ -1,12 +1,13 @@
 using Microsoft.AspNetCore.Mvc;
 using System.Text;
 using UmlautAdaptarr.Models;
+using UmlautAdaptarr.Providers;
 using UmlautAdaptarr.Services;
 using UmlautAdaptarr.Utilities;
 
 namespace UmlautAdaptarr.Controllers
 {
-    public abstract class SearchControllerBase(ProxyRequestService proxyRequestService, TitleMatchingService titleMatchingService) : ControllerBase
+    public abstract class SearchControllerBase(ProxyRequestService proxyRequestService, TitleMatchingService titleMatchingService, ILogger<SearchControllerBase> logger) : ControllerBase
     {
         // TODO evaluate if this should be set to true by default
         private readonly bool TODO_FORCE_TEXT_SEARCH_ORIGINAL_TITLE = true;
@@ -110,7 +111,15 @@ namespace UmlautAdaptarr.Controllers
 
         private string ProcessContent(string content, SearchItem? searchItem)
         {
-            return titleMatchingService.RenameTitlesInContent(content, searchItem);
+            try
+            {
+                return titleMatchingService.RenameTitlesInContent(content, searchItem);
+            }
+            catch (Exception ex)
+            {
+                logger.LogError($"Error at ProcessContent: {ex.Message}{Environment.NewLine}Content:{Environment.NewLine}{content}");
+            }
+            return null;
         }
 
         public async Task<AggregatedSearchResult> AggregateSearchResults(
@@ -154,7 +163,8 @@ namespace UmlautAdaptarr.Controllers
 
     public class SearchController(ProxyRequestService proxyRequestService,
                                   TitleMatchingService titleMatchingService,
-                                  SearchItemLookupService searchItemLookupService) : SearchControllerBase(proxyRequestService, titleMatchingService)
+                                  SearchItemLookupService searchItemLookupService,
+                                  ILogger<SearchControllerBase> logger) : SearchControllerBase(proxyRequestService, titleMatchingService, logger)
     {
         public readonly string[] LIDARR_CATEGORY_IDS = ["3000", "3010", "3020", "3040", "3050"];
         public readonly string[] READARR_CATEGORY_IDS = ["3030", "3130", "7000", "7010", "7020", "7030", "7100", "7110", "7120", "7130"];
diff --git a/UmlautAdaptarr/Services/Factory/ArrApplicationFactory.cs b/UmlautAdaptarr/Services/Factory/ArrApplicationFactory.cs
index 98f2b5c..dda33b9 100644
--- a/UmlautAdaptarr/Services/Factory/ArrApplicationFactory.cs
+++ b/UmlautAdaptarr/Services/Factory/ArrApplicationFactory.cs
@@ -52,7 +52,7 @@ namespace UmlautAdaptarr.Services.Factory
             }
             catch (Exception e)
             {
-                _logger.LogError("Error while Register ArrFactory. This might be a Config Problem", e.Message);
+                _logger.LogError("Error while registering ArrFactory. This is most likely a config problem, please check your environment variables.", e.Message);
                 throw;
             }
         }
diff --git a/UmlautAdaptarr/Utilities/UrlUtilities.cs b/UmlautAdaptarr/Utilities/UrlUtilities.cs
index 2d016ae..dd81425 100644
--- a/UmlautAdaptarr/Utilities/UrlUtilities.cs
+++ b/UmlautAdaptarr/Utilities/UrlUtilities.cs
@@ -5,7 +5,8 @@ namespace UmlautAdaptarr.Utilities
 {
     public partial class UrlUtilities
     {
-        [GeneratedRegex(@"^(?!http:\/\/)([a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)+.*)$")]
+        [GeneratedRegex(@"^(?!http:\/\/)([a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)+(:\d+)?(/.*)?)$")]
+
         private static partial Regex UrlMatchingRegex();
         public static bool IsValidDomain(string domain)
         {
diff --git a/UmlautAdaptarr/Validator/GlobalInstanceOptionsValidator.cs b/UmlautAdaptarr/Validator/GlobalInstanceOptionsValidator.cs
index de6d087..e4c90a8 100644
--- a/UmlautAdaptarr/Validator/GlobalInstanceOptionsValidator.cs
+++ b/UmlautAdaptarr/Validator/GlobalInstanceOptionsValidator.cs
@@ -35,34 +35,38 @@ public class GlobalInstanceOptionsValidator : AbstractValidator<GlobalInstanceOp
                && (uriResult.Scheme == Uri.UriSchemeHttp || uriResult.Scheme == Uri.UriSchemeHttps);
     }
 
-    private static async Task<bool> BeReachable(GlobalInstanceOptions opts, CancellationToken cancellationToken)
-    {
-        var endTime = DateTime.Now.AddMinutes(3);
-        var reachable = false;
-        var url = $"{opts.Host}/api?apikey={opts.ApiKey}";
+  private static async Task<bool> BeReachable(GlobalInstanceOptions opts, CancellationToken cancellationToken)
+  {
+      var endTime = DateTime.Now.AddMinutes(3);
+      var reachable = false;
+      var url = $"{opts.Host}/api?apikey={opts.ApiKey}";
 
-        while (DateTime.Now < endTime)
-        {
-            try
-            {
-                using var response = await httpClient.GetAsync(url, cancellationToken);
-                reachable = response.StatusCode == HttpStatusCode.OK;
-                if (response.IsSuccessStatusCode)
-                {
-                    break;
-                }
-            }
-            catch
-            {
+      while (DateTime.Now < endTime)
+      {
+          try
+          {
+              using var response = await httpClient.GetAsync(url, cancellationToken);
+              if (response.IsSuccessStatusCode)
+              {
+                  reachable = true;
+                  break;
+              }
+              else
+              {
+                  Console.WriteLine($"Reachable check got unexpected status code {response.StatusCode}.");
+              }
+          }
+          catch (Exception ex)
+          {
+              Console.WriteLine(ex.Message);
+          }
 
-            }
+          // Wait for 15 seconds for next try
+          Console.WriteLine($"The URL \"{opts.Host}/api?apikey=[REDACTED]\" is not reachable. Next attempt in 15 seconds...");
+          Thread.Sleep(15000);
+      }
 
-            // Wait for 15 seconds for next try
-            Console.WriteLine($"The URL \"{opts.Host}\" is not reachable. Next attempt in 15 seconds...");
-            Thread.Sleep(15000);
-        }
-
-        return reachable;
-    }
+      return reachable;
+  }
 
 }
\ No newline at end of file
diff --git a/UmlautAdaptarr/appsettings.json b/UmlautAdaptarr/appsettings.json
index c1874b8..9a94818 100644
--- a/UmlautAdaptarr/appsettings.json
+++ b/UmlautAdaptarr/appsettings.json
@@ -67,7 +67,7 @@
   },
   "IpLeakTest": {
     // Docker Environment Variables:
-    // - IpLeakTest: false (set to true to enable)
+    // - IpLeakTest__Enabled: false (set to true to enable)
     "Enabled": false
   }
 }
diff --git a/docker-compose.yml b/docker-compose.yml
index 52252cd..586a1b2 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -23,7 +23,7 @@ services:
       - LIDARR__ENABLED=false
       - LIDARR__HOST=http://localhost:8686
       - LIDARR__APIKEY=APIKEY
-      #- IpLeakTest=false # uncomment and set to true to enable IP leak test
+      #- IpLeakTest__Enabled=false # uncomment and set to true to enable IP leak test
       ### example for multiple instances of same type
       #- SONARR__0__NAME=NAME 1 (optional)
       #- SONARR__0__ENABLED=false