Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Are you using the Office apps on a Windows PC or on an Apple Mac computer?
1
If you are using the Office apps on a Windows device:
Before performing this process, please log into your Microsoft account on this link (https://account.microsoft.com/services/) and check to ensure your Microsoft 365 subscription is listed correctly on your account.
Open the Settings App (gear icon on your Start Menu)
Go to Apps, then scroll down to find Microsoft Office
Select that and choose Modify - Online Repair
That should fix any issues with your Office Installation.
2
If you are using the Office apps on an Apple Mac computer:
At the top left of your Mac desktop, click the Apple icon and select 'About this Mac', what version of MacOS is installed on your computer?