* This licence has no "real expiration date", it ends in these cases: 1) If the Google Workspace Marketplace and/or the corresponding Google application (Sheets, Forms, Docs, Slides etc.) is shut down. 2) If the Google Workspace Marketplace and/or the corresponding Google application (Sheets, Forms, Docs, Slides etc.) is changed in a way, which would require a severe refactoring of the addon.