I merged your threads and made you the owner of the original guest post.
Which Note Pad app are you talking about? Can you share its Play Store link? As you might expect, there's more than one 3rd party app called "Notepad" or some variation on that name. Is it this one?
https://forums.androidcentral.com/e?...token=BwBVcGHp
My guess is that the app developers recently changed the name of the app to Inkpad, possibly adding a requirement to use it with an account.
I would recommend just using Google Keep for your notetaking, to be frank.