Cannot login to Mozilla developer account

I am a developer of Firefox extensions and have had a Mozilla developer account for over 15 years. For some reason, I can no longer login to that account. When attempting to login, I get a message to "Confirm your account". The displayed email address is correct, but I never receive the conformation email. I've check my junk and trash folders and even have a filter setup to accept all emails from "accounts@firefox.com", but I still never get the conformation email. I tried setting up a new account and that works, but I cannot access my developer dashboard with the new account.