@~Z~ Man I see, some users are asking for normal accounts, i told them just change your username, so that would be sufficient enough i believe?

You can't.
And actually I don't see no reason to have both options in place.

How can I also display normal registration too?

NIce thanks!

Nice update

Sorry, there is no problem
Everything works

great idea (~Z~ Man)
It seems I am having a problem the user name does not work

Naser,
a later change of the username is and will not be allowed because the username might be referenced throughout Ossn in several places.
Version 1.1 instead offers the opportunity to choose an individual username now.

What the developer mentioned ( ~Z~ Man) on membership benefits
and it's up to your new member
1-to either delete the account right after registering,
2-stay anonymous,
3-or to personalize his data.

And number 3 means the member can retain his membership,
so I suggested modifying the username
in case 1 and 2 that is not important.
As for case 3, this is what I discussed.

Excuse me my english is weak

I have thoughts that Anonymous registration if users start using own usernames its no more anonymous, the usernames generated by system is actually anonymous.