Rivian Link broken - stuck at login

I noticed my Rivian link with ABRP was stale and was not refreshing when using recently. I attempted to relink the connection, but I am stuck in an authentication loop with username/password and then username/AuthCode. I know my Rivian pasword is correct, and I am entering the emailed 6-digit code correctly, but it then tells me it was an incorrect username/password. I deleted the Rivian entry and tried to manually add it again, with the same result. I also tried on PC/Browser and in the Android app with the same result. Why is the ABRP/Rivian linking broken with the auth/auth of Rivian?