App update requiring wrong Apple ID

Recently (this week) *my* phone has been requiring *my husband’s* Apple ID/App Store password to update some random apps. I figured maybe they somehow got downloaded under his name (though I have no idea how that could happen) and I fixed the problem be deleting the app and redownloading it, making sure App Store was signed in as me.

But today, it’s requiring his password to update Facebook. This makes no sense. Facebook updates all the time and has never needed his password before. I have definitely not reinstalled it since its last update. He has not signed in to the App Store on my phone. What is going on?!?!

it just started this week. Every day when there are updates, ONE needs his password. I ignored it when it was random little apps that don’t update often. But with FB I *know* it was never under his name before.