MuseScore not loading on iPad when loading a piano score

Good Day, all:

I have the MuseScore app on my iPad and the other day, I've recently bought the MuseScore+ Subscription (that was bought using the iTunes Credit).

I've tried to access a score on the MuseScore app and whenever I tried to load a score, it says that "The Score is loading, it may take a while."

Shortly thereafter, I have received an error stating the following: "Error - the operation couldn't be completed (com.appledevicecheck.error 3.)". My son tried to uninstall and reinstall the iOS app on my iPad - however despite uninstalling and reinstalling the app, the result was the same.

The version that I have for my iPad is the 6th Generation with the iPadOS Version of 17.7.2. Currently, a "clean install" (or factory reset) is not in the horizon - however it may be eventually be a last resort to solve that issue that I'm experiencing.

To summarize, I would like to know how to fix this particular issue from happening and wanted to make sure that the app is functional again. Please advise.