1. Can I make more Shopify stores and use them all on my 1 FB ad account? 2. Do I have to pay the taxes to the US IRS if I'm not a US citizen and live abroad and if I use Payoneer card or some other card and a foreign bank account? 3. Can I advertize that I would donate some % of the profit to charity in order to make more money, and who and how is going to check it to see whether I actually do it or not (I don't plan on cheating anyone, but am interested about how that would be monitored)?