Right I have already commented several times line 1041 of install.php must be what I posted.
I will look at what your doing if you send info. You must send cpanel info if you want me to look at your database.
I am just telling you what I know to be true. I showed you the function right from sellerspost.php and here is what happens if you select internal registration
Content visible to verified customers only.
I would need to see your stuff to comment further here.