If that doesn’t solve the problem, the next step is to remove those files we mentioned earlier.
If you don’t see it, check that you are signed into the correct account. How to fix “Your account doesn’t allow editing on a Mac” In the end of this article, we'll explain how to reset your MS Office with CleanMyMac X.
It has an Uninstaller which can also reset apps instead of completely uninstalling them. The easiest way to do that is to use CleanMyMac X. If you’re having problems with Office 365 and they’re not solved by the steps here, you can try resetting the app so that it returns to the state it was in when it was first installed.
