Pay per View plugin. I need to install it in a second subdomain

Dear sirs

I purchased PPV plugin and it works fine.
Is installed in gaming.versusmonitor.com (English version)
I need to install PPV plugin in juegos.versusmonitor.com (Spanish version)
The question is: How to pay? The system does not allow me to pay easily.
What kind of process is needed to let me install the plugin?