I use Payoneer's MasterCard and most of the freelancers from all around the world too.
Whenever I add my card, I get an error of non-supported card type. What's more, DO requires all the PayPal accounts to be verified for shipping. Really??
I know, this could be security but what about countries where PayPal is not supported and only way to pay and get paid is something like Payoneer.
I got my account suspended just for these reasons.
Please have a serious look at it. I love DO and I don't want to leave it.
Due to risk of fraud with prepaid cards, we generally block them by default but having said that, please reach out to our support team if you have a special need with using payment methods like Payoneer's MasterCard.