I had a similar problem. I used Google to sign in on digitalocean, then I changed the main domain in google apps and readded the original domain seperately on Google Apps. But probably because some kind of ID mismatch, I was now unable to sign-in on Digitalocean with the original e-mail address recreated in Google Apps. Password recovery didn't work either, for some reason digitalocean doesn't do password reset for accounts that were created using Google sign-in. I was forced to create a support ticket with digitalocean and wait.
capableweb|5 years ago
They probably put a human to communicate with you, verify some identity and then give you access to your servers again, I'm sure?
Compare that with Google (and Facebook, those are the two I have experience with) who will simply lock you out of your account and if you ask for help, they say they cannot. "But what about the three years of photos I've stored?" I asked. "They have now been deleted since your account was terminated" they told me. "Why?" "We cannot tell you".