diff --git a/keycloak/keycloak_admin.py b/keycloak/keycloak_admin.py
index 9e7292f..2ec9169 100644
--- a/keycloak/keycloak_admin.py
+++ b/keycloak/keycloak_admin.py
@@ -47,6 +47,17 @@ class KeycloakAdmin:
 
     PAGE_SIZE = 100
 
+    _server_url = None
+    _username = None
+    _password = None
+    _realm_name = None
+    _client_id = None
+    _verify = None
+    _client_secret_key = None
+    _auto_refresh_token = None
+    _connection = None
+    _token = None
+
     def __init__(self, server_url, username, password, realm_name='master', client_id='admin-cli', verify=True, client_secret_key=None,
                  auto_refresh_token=None):
         """
@@ -60,30 +71,18 @@ class KeycloakAdmin:
         :param client_secret_key: client secret key
         :param auto_refresh_token: list of methods that allows automatic token refresh. ex: ['get', 'put', 'post', 'delete']
         """
-        self._server_url = server_url
-        self._username = username
-        self._password = password
-        self._realm_name = realm_name
-        self._client_id = client_id
-        self._verify = verify
-        self._client_secret_key = client_secret_key
-        self._auto_refresh_token = auto_refresh_token or []
+        self.server_url = server_url
+        self.username = username
+        self.password = password
+        self.realm_name = realm_name
+        self.client_id = client_id
+        self.verify = verify
+        self.client_secret_key = client_secret_key
+        self.auto_refresh_token = auto_refresh_token or []
 
         # Get token Admin
         self.get_token()
-        self.keycloak_openid = KeycloakOpenID(server_url=self.server_url, client_id=self.client_id,
-                                              realm_name=self.realm_name, verify=self.verify,
-                                              client_secret_key=self.client_secret_key)
 
-        grant_type = ["password"]
-        if client_secret_key:
-            grant_type = ["client_credentials"]
-        self._token = self.keycloak_openid.token(username, password, grant_type=grant_type)
-        self._connection = ConnectionManager(base_url=server_url,
-                                             headers={'Authorization': 'Bearer ' + self.token.get('access_token'),
-                                                      'Content-Type': 'application/json'},
-                                             timeout=60,
-                                             verify=verify)
 
     @property
     def server_url(self):
@@ -166,8 +165,8 @@ class KeycloakAdmin:
         allowed_methods = {'get', 'post', 'put', 'delete'}
         if not isinstance(value, Iterable):
             raise TypeError('Expected a list of strings among {allowed}'.format(allowed=allowed_methods))
-        if not any(method not in allowed_methods for method in value):
-            raise TypeError('Unexpected method, accepted methods are {allowed}'.format(allowed=allowed_methods))
+        if not all(method in allowed_methods for method in value):
+            raise TypeError('Unexpected method in auto_refresh_token, accepted methods are {allowed}'.format(allowed=allowed_methods))
 
         self._auto_refresh_token = value