Not able to set up a domain name if I already have Zoho email address.

Not able to set up a domain name if I already have Zoho email address.

The YouTube video isnt the best go to. I tried for a couple of hours now trying to set up my domain email address and set it up and pay for it. I type the name that I want and then I want it with .com and then it takes me directly to my Zoho email page. Please help thanks