@zombietron its too much of a coincedence that we both have this issue and both ha e home assistant. I think homeassistant logs in every 30 seconds to update its sensors resulting 2 users logging in...

I am running home assistant with a tp link router extension, i think this is the issue as ther is only 1 login at a time

@Marvin_S already tried a factory reset and firmware is latest

The router admin keeps returning me to login screen, sometimes i click on a link and i am returned to the login screen, i login and if im lucky i can change what i need to before it logs out again...