Lost access to account - need reassign licenses

My email address changed and I no longer own my old domain to login with.

I have tried emailing a passport photo which worked on a different site, my web host 123-reg.

Here at Perch no reply though. I have a former client leaving me and a new project I'd like to set-up.

The developers are no longer interested in the product. How can I justify spending money when my issues are not being resolved?