Router won't let me access settings

Hello,
So i was configuring my router. All was going well then all of a sudden it disconnected me. I went to log in again but it was not in https and when i enter the password it adds and removes characters every time i type and when i finish typing it says invalid password. Idk what to do. Also when i configured and changed settings it added a new wireless network with a .b Did i get hacked?