Appstore mixes up accounts

Hi! I am using an iPad wich I once also used within the context of the company I worked for. So now eventhough this is a long time ago, after updating the ipad it mixes up BOTH accounts. So I am logged in with my personal apple account, also so stating in the appstore but as soon as I want to update an app, it asks me for the password of the old company apple account I used. This wouldn‘t bother me because I still know the password, but two way authentication blocks my way (I don‘t have access to that old mac book of that company). So what can I do know? And how can this happen? I mean I quit working at that company in 2022 and also switched my ipad probably even earlier back to my personal account. Thanks a lot for listening and for your proposals on how to solve this. Best regards Jen