"Library" page in the Microsoft Store app (not in WinSCP).
Did you buy/install anything from the Store on the new Windows 11 already?
I've just tried the Store on new machine. And while it looked like I'm already logged in, the app did not really reflect my past purchases, until I've actually tried to purchase/install something.

Can't find WinSCP on my machine. WinSCP has no "Library" option. Microsoft didn't say "already purchased". There is no "auto update" option in config.

Can you please be more specific? Do you get any error? Is WinSCP missing the the "Library" tab of Microsoft Store app?

Microsoft doesn't know that I've purchased.

Yes, that's correct:
WinSCP from Microsoft Store
Thanks for supporting WinSCP development.

Never mind. I dug into it a little more and found where Microsoft had built a separate install. Deleted the classical install from my PC and restarted WinSCP. Now it looks like it should automatically update.

I recently purchased 5.19.5 from the Microsoft Store. When I attempt to enable automatic updates it tells me that my email address is not valid for updates. I have also donated before, I believe using the same email address. How can I get the address authorized?