I do understand it is very old but since the pandemic started I just don't have the $$ to upgrade. I'm only now just starting to come back financially and there are more important things to use my bank account for at this time. 🙂
Having said that, that OneDrive link also updated me to 11. I guess I'll have to use it unregistered for now.
EDIT: Actually just saw the Quarterly plan for the Master's Edition. I can do that. Not a fan of subscription models but I'll give it a try.