I had the same issue.
I tried to use my card and it was blocked by chase because they suspected fraud, so i tried my sil card and a few days after submitting the payment they asked for proof and cancelled my order. So i sent a pic of my ID, CC, and CC statement through their website, of course blurred out all the personal info except the info they already had (ex name, address, cc #, etc.). Finally after a month they replied that they need the same for the other card. Did not want to bother again sending my sil info so i ignored and opened a new account, they did request the same thing again so i sent everything over again and after about a month they sent me a email that my account/payment is good. Since then i always order without any problems.