EDIT: I'm also okay with the fact that in the about section, I will have to see Office 2016 instead of Office 365.
I've installed Office 365 few days back using MSGuides article https://msguides.com/microsoft-software-products/activate-office-365-proplus-free.html.
But I cannot make it work no matter what. Office 365 literally turns itself into either Office 2019 or 2016 based on the scripts on which it becomes activated, which is quite opposed to what GuangP claimed here.
Is there a way to make office 365 actually work without paying a dime? I'm aware I'll have to run the activation script once in every 180 days, and I'm okay with that.
And again, let's come back to the crucial question.
How to prevent office 365 to turn to office 2019/2016?