Americans cannot use Cryptopay.
Cryptopay is a decent service for the first unverified purchase using one of their cards. But, in my experience, the second purchase fails with a verification request. Which is crazy to see if your purchases are within the unverified tier. If you are American and you attempt to get verified, Cryptopay will give you a couple days to clear out your account before they shut it down. There is no discussion. This policy is a direct reflection of Cryptopay's unwillingness to submit to harassment by the American government. And, while that sucks for me and other Americans, I completely respect their right to limit potential liabilities.