I have two Discover cards registered with Paypal for many years, as well as many Visa and Mastercard's. For the past several purchases, when I check out with Groupon, the two Discover cards are missing from my choice of cards. This only happens with Groupon - with every other merchant both Discover cards apply. Discover said to contact Groupon, Groupon chat rep insists all cards should display and to contact Paypal. Does anyone have the answer why? Many times I want to use Discover as they offer cash back bonuses for using Paypal. Thanks Bob
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