Try logging in with the same credentials, but over at the "Global" program site. If that fails, then try password reset THERE on the "Global" site.

Me and P2 had two accounts where I experienced the exact same behavior that you are describing, and the above steps fixed it for us.

Whether you get sorted into the "Americas" bucket or the "Global" bucket seems pretty random. Me and P2 are Americans/US residents. We have three accounts between us (2 personal, 1 business). 2 of them ended up in Global, 1 ended up in Americas. No rhyme or reason.