I keep on getting "RDP session disconnected"

Hello,

I have recently purchased PocketCloud Remote Desktop Pro for iPad (2, iOS 5).

After installing the Windows companion, and after restarting both computer and iPad, and after checking that my Windows (version 7, 64 bits) "allow connections from computers running any version of Remote Desktop (less secure)" and checking that Windows client is enabled in Firewall, and trusted by antivirus ... after all, the paid application is still completely useless. I have no idea what to do. I wish that I didn't waste money.

Thanks for any helpful instructions.

Regards