diff --git a/controller.py b/controller.py
index d6c6bdb4..bb7fae7b 100644
--- a/controller.py
+++ b/controller.py
@@ -212,7 +212,7 @@ def initSetLanguageAndCountry():
     config.TARGET_LANGUAGE = language
     config.TARGET_COUNTRY = country
     config.CHOICE_TRANSLATOR = model.findTranslationEngine(config.SOURCE_LANGUAGE, config.TARGET_LANGUAGE)
-    model.authenticationTranslator(callbackSetAuthKeys)
+    model.authenticationTranslator()
 
 def setYourLanguageAndCountry(select):
     languages = config.SELECTED_TAB_YOUR_LANGUAGES
@@ -222,7 +222,7 @@ def setYourLanguageAndCountry(select):
     config.SOURCE_LANGUAGE = language
     config.SOURCE_COUNTRY = country
     config.CHOICE_TRANSLATOR = model.findTranslationEngine(config.SOURCE_LANGUAGE, config.TARGET_LANGUAGE)
-    model.authenticationTranslator(callbackSetAuthKeys)
+    model.authenticationTranslator()
     view.printToTextbox_selectedYourLanguages(select)
 
 def setTargetLanguageAndCountry(select):
@@ -233,7 +233,7 @@ def setTargetLanguageAndCountry(select):
     config.TARGET_LANGUAGE = language
     config.TARGET_COUNTRY = country
     config.CHOICE_TRANSLATOR = model.findTranslationEngine(config.SOURCE_LANGUAGE, config.TARGET_LANGUAGE)
-    model.authenticationTranslator(callbackSetAuthKeys)
+    model.authenticationTranslator()
     view.printToTextbox_selectedTargetLanguages(select)
 
 def callbackSelectedLanguagePresetTab(selected_tab_no):
@@ -250,12 +250,9 @@ def callbackSelectedLanguagePresetTab(selected_tab_no):
     config.TARGET_LANGUAGE = language
     config.TARGET_COUNTRY = country
     config.CHOICE_TRANSLATOR = model.findTranslationEngine(config.SOURCE_LANGUAGE, config.TARGET_LANGUAGE)
-    model.authenticationTranslator(callbackSetAuthKeys)
+    model.authenticationTranslator()
     view.printToTextbox_changedLanguagePresetTab(config.SELECTED_TAB_NO)
 
-def callbackSetAuthKeys(keys):
-    config.AUTH_KEYS = keys
-
 # command func
 def callbackToggleTranslation(is_turned_on):
     config.ENABLE_TRANSLATION = is_turned_on
@@ -377,17 +374,22 @@ def callbackSetUiLanguage(value):
 # Translation Tab
 def callbackSetDeeplAuthkey(value):
     print("callbackSetDeeplAuthkey", str(value))
-    if len(value) > 0 and model.authenticationTranslator(callbackSetAuthKeys, choice_translator="DeepL(auth)", auth_key=value) is True:
+    if len(value) > 0:
+        result = model.authenticationTranslator(choice_translator="DeepL_API", auth_key=value)
+        if result is True:
+            auth_keys = config.AUTH_KEYS
+            auth_keys["DeepL_API"] = value
+            config.AUTH_KEYS = auth_keys
+            view.printToTextbox_AuthenticationSuccess()
         config.CHOICE_TRANSLATOR = model.findTranslationEngine(config.SOURCE_LANGUAGE, config.TARGET_LANGUAGE)
-        model.authenticationTranslator(callbackSetAuthKeys)
-        view.printToTextbox_AuthenticationSuccess()
     elif len(value) == 0:
         auth_keys = config.AUTH_KEYS
-        auth_keys["DeepL(auth)"] = None
+        auth_keys["DeepL_API"] = None
         config.AUTH_KEYS = auth_keys
-        model.authenticationTranslator(callbackSetAuthKeys)
+        config.CHOICE_TRANSLATOR = model.findTranslationEngine(config.SOURCE_LANGUAGE, config.TARGET_LANGUAGE)
     else:
         view.printToTextbox_AuthenticationError()
+    print(config.AUTH_KEYS, config.CHOICE_TRANSLATOR)
 
 # Transcription Tab (Mic)
 def callbackSetMicHost(value):
@@ -634,11 +636,11 @@ def createMainWindow():
     # init config
     initSetLanguageAndCountry()
 
-    if model.authenticationTranslator(callbackSetAuthKeys) is False:
+    if model.authenticationTranslator() is False:
         # error update Auth key
         view.printToTextbox_AuthenticationError()
         config.CHOICE_TRANSLATOR = model.findTranslationEngine(config.SOURCE_LANGUAGE, config.TARGET_LANGUAGE)
-        model.authenticationTranslator(callbackSetAuthKeys)
+        model.authenticationTranslator()
 
     # set word filter
     model.addKeywords()
diff --git a/model.py b/model.py
index 68b48e81..91507df1 100644
--- a/model.py
+++ b/model.py
@@ -81,20 +81,13 @@ class Model:
         del self.keyword_processor
         self.keyword_processor = KeywordProcessor()
 
-    def authenticationTranslator(self, fnc, choice_translator=None, auth_key=None):
+    def authenticationTranslator(self, choice_translator=None, auth_key=None):
         if choice_translator == None:
             choice_translator = config.CHOICE_TRANSLATOR
         if auth_key == None:
             auth_key = config.AUTH_KEYS[choice_translator]
 
         result = self.translator.authentication(choice_translator, auth_key)
-        if result:
-            auth_keys = config.AUTH_KEYS
-            auth_keys[choice_translator] = auth_key
-            try:
-                fnc(auth_keys)
-            except:
-                pass
         return result
 
     def startLogger(self):
@@ -139,6 +132,8 @@ class Model:
         engine_name = compatible_engines[0]
 
         if engine_name == "DeepL" and config.AUTH_KEYS["DeepL_API"] != None:
+            engine_name = "DeepL_API"
+        elif engine_name == "DeepL_API" and config.AUTH_KEYS["DeepL_API"] == None:
             engine_name = "DeepL"
 
         return engine_name
@@ -146,9 +141,6 @@ class Model:
     def getTranslatorStatus(self):
         return self.translator.translator_status[config.CHOICE_TRANSLATOR]
 
-    def getListTranslatorName(self):
-        return list(self.translator.translator_status.keys())
-
     def getInputTranslate(self, message):
         try:
             if config.CHOICE_TRANSLATOR == "DeepL_API":