Yes, me.com is an older name for what's known today as icloud.com.

Your issues sounds like a browser problem, rather than something with the donation site. Perhaps it (the browser) is trying to help you login and has a bogus login name/password saved for that site?

I'd try a different browser first to see if the problem disappears, and then (assuming it's browser specific) review how to delete saved accounts and/or reset cookies.

Of course, if you're using Windows it could be malware, but who knows.

It's definitely on his site. My prefix is only two characters, sometimes I'm rejected as invalid format. Mine was one of those grandfathered in by the ISOC.

I'll kill this now...