how to find a person with a username?

Go here: https://www.cgtrader.com/designers next to the search field choose "designer name" and type full, or a fragment of a name in the search field.

Alternatively, if you know exact username, you can just type in browser's address bar https://www.cgtrader.com/*** where *** is username.

May be You would like to find somebody who bought your model?
List of all your buyers You will find in earnings section.

Are you searching for the buyers of your previous banned account with pirated models? :)))))))

how to register on hyper wallet any did not receive this month payment on my Payoneer account.and the sow amount extend to next month's help to resolve this issue. Thanks