Zoho says "This Domain is not supported or is already registered with Zoho"

Zoho says "This Domain is not supported or is already registered with Zoho"

Guys,

I have purchased new domain (edlt.io). When i have tried to create a email for that domain i gave ma number to verification. But i didnt got verification code and i have tried to created again. then it says " This Domain is not supported or is already registered with Zoho ". Now i am not able to create an email for this email. Please guide me on this issue. 

Thanks!