Board Thread:Questions and Answers/@comment-153.125.231.146-20170416003352/@comment-28785499-20170416150213

Happens to me too, was using a Visa Credit Card. I register it at first, with no problem. Then i had to renew the card, since the expire date was near. After i renew the card, i was trying to update the card info on my profile, but strangely DMM rejects it, even though its pretty much the same card as before (same card number, the only thing different is the expire date and a new 3 digit security number thing). So i was forced to use Paypal, which is frankly a bit inconvenient (mainly because you can't get the bonuses and paying slightly more). But last month i decided to register the card on a whim, and suprisingly DMM accepts it again.

Its weird i know, and  we can't be sure about the reasons, but DMM do occasionally rejects some cards, even cards that were previously accepted. You can try registering your card on the R-18 section, using other payment method (Paypal, Bitcoins etc) or just wait and see if DMM will accept your card again like me.

See this for more details.