Hey Jamie,
I wanted to give you the heads up, believe it or not, we recently changed our user agreement. We no longer support filehosting. I know what your thinking, but the good news is that you can still use Payza to send/receive money. Just be sure not to submit a filehosting site for review, doing so will prevent you from being able to receive money.
That's interesting what you bring up about WHMCS. Last I checked, they had a forum, maybe check it out? I'm, sure they'll have some answers for you?
As for verification, you'll have to initiate a validation charge and confirm the amount. More on this here:
https://helpdesk.payza.com/index.php...t-verification
Enjoy!
Tarik
Can I ask you WHY?