Authenticator every time i log on

I used data to play wow for about 2 weeks , everytime i logged in it asked me for authenticator , now i use normal wifi bit it still asks me for authenticator everytime i log in , please help

When i say data i mean mobile data , i opened data from my mobile phone and then i shared it to my pc

You're asked to renew the authentication when your IP changes.
That isn't something on the server side, it's something likely with your ISP.

Same hapend to me when i try to login in game it ask me for some authenicator code... i dont know where to fine that