problem with update 13.3.1

I updated my IPAD Pro. The screen came with enter apple id in password in settings. I went to settings and tried it did not accept my password. The screen shows my original apple id that I changed years ago. I do not remember the password so I tried to reset it. It reset my current apple id password. I tried to enter the old id and it said that is not an id. I can not get out of the loop. it is locked up in a loop. It only allows me to enter password. I cannot change the id.