Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
If your MacOS is Catalina (10.15.8) and you are unable to upgrade your MacOS to a new version (12 or higher), then the Microsoft 365 apps will go into read only mode, your existing documents cannot be edited and you cannot create new documents.
If you open a document, are you unable to print the document even though your Office apps are in read only mode?
If not, if you upload the documents to your OneDrive (https://onedrive.live.com/) in a web browser, are you then able to open your documents from there in the free online version of the Office apps and print your documents from there?