Problem is, my billing address isn't listed anywhere on my WW Online account - it doesn't come up on the payment page, nor does it appear anywhere on my account details/profile or anywhere else I can find, only delivery addresses are listed (which i don't want to use anyway, as I wanted to do C & C). I contacted WW Online customer service and the CSO had a look at my account - he said the payment issue was probably due to me having my PO Box on the account!! However my PO Box IS my billing address so would have been provided on sign up, so that shouldn't have been an issue when making payment if that address was already there). He replaced that with my physical address, and my DOB was missing as well - which wasn't a required field when I signed up, but there was a message in red text on my account saying "pls contact us to update your DOB" so maybe that was causing a problem ... Who knows? Guess I'll find out when (if?) I try putting in another order.