I have the same problem now.
My gmail email for some reason was deleted, not by myself , not by google, so could be hacked and then deleted. It no longer exists. I cannot login the web based airbnb as it redirected to google. I contacted airbnb helpdesk multiple times but all I got is "sorry we can't help with this situation".
I'm a super host with 71 positive review and I worked so hard to achieve this. I don't want to create a new account that I'll lose my super host badge and all reviews , as well as all the current bookings.
I can't believe for such a simple technical question that airbnb can't do anything about it. They can verify via anything, my passport, my phone number or even police check verification.
Wondering anyone else has resolved this recently?