My email is invalid and my domain is linked to it and my telephone number.

My email is invalid and my domain is linked to it and my telephone number.

I struggled with setting up my emails to my website, I tried to create a new account and now my domain is still linked to my old accountCan you help in unlocking my domain to my old account and advise on a new account so that I can start over?My domain is www.unconventionaldesignyork.comThe other problem is I can't even get into that account now as the email is apparently invalid.Please can you help?