Unable to integrate Pagseguro International

Hello there,

I have followed all necessary steps to integrate pagseguro with woocommerce however it wont let my site redirect to the payment page instead it stops at https://shop.mercadia.es/wc-api/wc_pagseguro_internacional_hosted_request?oid=425

Also the pageseguro international dashboard, it wont move further than registration aaproved.

Please help

The page I need help with: [log in to see the link]