so, my girlfriends old apple ID keeps popping up asking for the password. I have changed my apple ID and my Itunes ID and it still pops up. what do I do?I cant download some of my apps because of it

Settings > Store > tap ID > sign out regardless of what it says > sign in with correct ID and billing info.

I'm having the same problem did you ever figure it out? I changed all billing info, changed my iPad id and email and still doesn't work.

Didn't work for me either

If you have any apps downloaded with the other AppleID, those apps

will ask for the other AppleID to update.

Downloads are forever tied to the AppleID used to download them.

Delete the apps associated with the unwanted ID and download them

under your ID. You will have to purchase apps that are not free.

You cannot transfer apps from one Apple ID to another, not can you

merge 2 Apple IDs.

thank you so much for info on how apple id's stay tied to an app. that totally worked, i just wish apple explained that instead of just asking for an old id password. thanks again