Status: 422—Code: device.attestation_failed

Hi,

I cannot get the "MuseScore: sheet music" app on my 10th-generation iPad running iOS 17.6.1 to work. Upon tapping on a piece of sheet music, I'm greeted with the error message: "Oops! The app seems to be turned off in the background. Please try refreshing. Status: 422—Code: device.attestation_failed." I've tried reinstalling the app. Can you tell me what app it's referring to that isn't running in the background?

Thank you.

--Adam