Error when linking domain

Error when linking domain

I made the registration for the domain microver.com.br but there was some error in sending the code by sms to the cell phone. Now I have completed the registration for johnson.metalblack@gmail.com but when you set up the zoho mail it says that my domain is already being used.

Please do this maintenance without database and link the domain microver.com.br to Cleiton Johnson (johnson.metalblack@gmail.com)