two domains one prestashop and paypal

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Ok...i have two domains. One is erysexymoda.com hosted by godaddy. The second is just a domain redirect mysexymoda.com purchased on register.com.

 

Paypal works just fine on Erysexymoda.com but when i try to process a payment through the redirected page mysexymoda.com it doesn't do anything I go thru the checkout process without a hitch but then when i click paypal nothing happens. no error nothing.

 

Has anyone had this problem? Do they have a solution to fix this?

 

Any info would be great!