This Domain is not supported or is already registered with Zoho

This Domain is not supported or is already registered with Zoho

Hi there.
There was some weird glitch in Zoho: I signed in as usual, but Mail application required to re-tie my mobile phone number for some reason. The form refused to accept my phone number since it's already added, but kept asking to tie phone number to my account for security. I used my other number to sign in, but there were no domains, it's all was completely blank!! Now I can't setup mail for my domain again, since setup form says " This Domain is not supported or is already registered with Zoho" . It's obviously some weird bug which I hope will be resolved soon.