Can someone help me make the username and name of a registered user to be the same? because now if you register as: test and you put test at username it wont accept it, you need to add an email

@oscman
Username is used in URLs of public profile and must be unique, it is not common user would enter it's username in osclass. Email will still may be required for login.

Yes but isn't it better to have unique usernames? because now i can have a user pretending someone else with the same name, i think every site uses unique usernames if its not hard to do why not any tip on where to start?

Not at all, as just some potion of users will be seller as well.