Problem with registration form

Hello,

I've made some changes in the registration form and now the fields username, name, password, confirm password and accept conditions are no longer required. Off course these fields need to be required and these are also the standard settings. I can't change these settings so i don't understand how this could have changed or how to change them as i can't acces settings.

How te fix this?

I've made a change in in the root and made a sort of override with default.php so that there are no locks in front of the costumer fields (they were User field from Joomla Core)

I can now choose not to show field TOS or showed name. But there are still no stars behind the fields to show that they are required apart from the e-mail field.

Also when i choose to not publish the showed name field, the form shows a pop-up that asks to fill in a user name. But this is filled in. When i publish the showed name field again and fill it in this problem doesn't occure. So this problem is due to a setting involving the field showed name.

Can someone help me fix this?