I haven't used WU, but just a warning, I tried to pay using xendpay as recommended by Ryan and got flagged by their compliance department and was asked to provide an invoice and website address which for obvious reasons I couldn't, the transaction was cancelled and I had a nightmare getting a refund, after nearly 7 weeks I needed to do a credit card chargeback and that was touch and go because of how xendpay was playing the rules.
Avoid xendpay at all costs, I believe that they are bordering on scammers the way they treated me and others I have read reviews online
ask ryan about the best option being offered by WU to use