Getting this too just this morning. Not my credit card info since I've used the same card 3 times in the last week for postage. Called the credit card company to make sure the card was active, it is. Not a browser issue, I have tried multiple browsers. I was only able to print the postage if I changed the funding source to my backup source which is an actual bank account and not a credit card. Not sure what the issue is with the card on file because it's been used previously with no issues. Anyone else receive an answer when it's not the credit card on file that is the problem???
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