I don't doubt you can do that, what I'm saying is the company could very well decide they will pay a certain max to each CC/paypal account. They aren't going to pay $1000+ out to a single account - that's an obvious scheme. IMO, the max they would pay to any single account would be @ $182/yr (you read their fine print, I'm guessing it's device independent - they will pay a max of 3 cents an hr per account, so if you want more you need devices linked to different accounts)
It might be questionable as to whether they can do that, but it's not enough money for you to hire a lawyer over.
On the other hand, they might not care much. People doing that might be good for their model since they get paid per ad, too. But poor acquisition rates would hurt their business model. Plus, most start-ups lose money for several years so a savvy CFO is going to look for opportunities to disqualify payments.