It seems that there is some problem with redirecting to the secure protocol:
1.
http://www.cdworlds.com/ - works
2.
https://secure.cdworlds.com/ - works
3.
https://www.cdworlds.com/ - hangs up in the same way as the back-end login form
Unfortunately, an on-server debugging is needed to investigate this problem further. Please contact our support staff:
https://secure.x-cart.com