Hey there. I just had this same problem. I was able to work around it by switching to the "Classic" interface. On the bottom of most pages, on the far left, is a link for Classic Site. So do the following: Go to the Wallet page. Click on the Classic Site link. In the Debit and credit cards section, click on the Update link on the right side. Click the Add a Card button. You should now be on a screen that doesn't have that CSC# bug. I hope that helps
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