Hello Tony! Thank you for your question. I will be assisting you today.I'm sorry about the issue. What's the exact name of the spreadsheet app? Please press and hold both the Power button and the Home buttons together for at least 10 seconds, until the Apple logo appears, then wait a bit, then check.
If that does not work, can you try to uninstall the spreadsheet app, then download/install it again:
Then go to App Store, then search for the spreadsheet app, then download/install it, and check.Please click on the Reply to Expert tab below, and reply back to me, so I can help further if there is still issue. Thank you very much,