Fixed DeepL state after changing its settings

I18N Commander/Processor/AppSettings.cs

@@ -168,7 +168,11 @@ public static class AppSettings
 
     #region DeepL Mode
 
-    public static async Task SetDeepLMode(SettingDeepLMode mode) => await AppSettings.SetSetting(SettingNames.DEEPL_MODE, mode);
+    public static async Task SetDeepLMode(SettingDeepLMode mode)
+    {
+        DeepL.ResetState();
+        await AppSettings.SetSetting(SettingNames.DEEPL_MODE, mode);
+    }
 
     public static async Task<SettingDeepLMode> GetDeepLMode() => await AppSettings.GetSetting(SettingNames.DEEPL_MODE, SettingDeepLMode.DISABLED);
 
@@ -176,7 +180,11 @@ public static class AppSettings
     
     #region DeepL API Key
 
-    public static async Task SetDeepLAPIKey(string apiKey) => await AppSettings.SetSetting(SettingNames.DEEPL_API_KEY, apiKey);
+    public static async Task SetDeepLAPIKey(string apiKey)
+    {
+        DeepL.ResetState();
+        await AppSettings.SetSetting(SettingNames.DEEPL_API_KEY, apiKey);
+    }
 
     public static async Task<string> GetDeepLAPIKey() => await AppSettings.GetSetting(SettingNames.DEEPL_API_KEY, string.Empty);
 

I18N Commander/Processor/DeepL.cs

@@ -76,4 +76,6 @@ public static class DeepL
             return string.Empty;
         }
     }
+    
+    public static void ResetState() => DEEPL_NOT_AVAILABLE = false;
 }

I18N Commander/Processor/Version.cs

@@ -2,5 +2,5 @@
 
 public static class Version
 {
-    public static string Text => $"v0.8.3 (2023-02-11), .NET {Environment.Version}";
+    public static string Text => $"v0.8.4 (2023-02-12), .NET {Environment.Version}";
 }

I18N Commander/UI WinForms/Program.cs

@@ -79,6 +79,7 @@ internal static class Program
                 // Start the app:
                 do
                 {
+                    Processor.DeepL.ResetState();
                     Application.Run(new Main());
                 } while (Program.RestartMainApp);
             }