Domain Enter Page

[SoloDZ]

I sent a ticket regarding my issue yesterday. my issue:

Hello,
please see this image:
http://i51.tinypic.com/2nq04z.jpg
I just need that option "I will use my existing domain and update my name servers" and I don't want "Transfer" and "Register" options
I don't know how to enable these options could you please tell me where i can just enable "I will use my existing domain and update my name servers" option please
thanks for your time sir
please reply as soon as possbile 

i got reply:

Hello,

If you only need the option to update nameservers, then you need to disable the options to register and transfer domains. This can be disabled in your whmcs admin panel at:
Setup >> General Settings >> (domains) tab

Then edit your 'Domain Registration Options' settings.

Now my question is:

I did exactly like what support team said but when i go to my client area->order->select product-> It just takes me to promo code page then billing

i cannot see the page where to enter domain

any ideas guys?

thanks for your time