Office 365 has no home edition and student edition, only home edition, personal edition, education edition and enterprise edition. Office 20 16 or 20 19 has a home edition and a student edition. Because Office 20 16 home and student editions are permanently activated, and there are only Word, PowerPoint and Excel, but there are no Outlook, Access, Publisher and OneNote.

You can uninstall Office 365, install Office 20 16 or 20 19 Home and Student Edition, and then enter the key to try to activate it, or make a phone call to try. If not, activate it with the activation tool. There are many activation tools online. However, the activation tool can only activate Office 20 16 and below, and cannot activate Office 365. Or support the original, buy one (like me).