(IOS) Invalid master password. Try again.

Hi,

I've been using bitwarden for over 5 years now and never had this issue until recently. In the iOS app (and only the iOS app), I can't view my saved cards. Any time I do, it asks for the master password, I enter it, and it says it's incorrect. I know the password is not wrong, to the point that I've typed it out elsewhere, copied it, and pasted it into the bitwarden field, and it still says it's wrong.

What can I do here? I can access the card info on the web browser just fine, with the same master password, but in the app it doesn't work and hasn't for months.