How do I download an app to an iPad that asks for another user's password? Probably going to sound wordy to explain but I've got an issue where my Apple ID is signed into my iPad but when I try to download an app it requests my ex girlfriends password for her Apple ID. When I'm using anything else on my iPad it requests my password and it's no problem.

Does that make sense and can anyone help?
The app was downloaded / bought using your ex-girlfriend Apple ID; delete and re download the app in question.