GL-AR750 asked for a new admin password?

routers software
#1

My GL-AR750S prompted me today to choose a new default language for the system and a new admin password. Is it normal that the password expires ?
(I’m not even sure I had to put my previous admin password before it asked me to change the password)

The wifi and every settings were the same after I changed the password.

Edit: It seems like I went through the first time setup process. Except i didn’t initiate it

#2

Did you do something and make the router lost the old password settings?

If it cannot find the old password it will ask for new password

#3

The only thing that happened was my mullvad subscription ended so I lost internet. I don’t know why it lost the other password tho in the first place.