I had the same problem. My OLD Target Redcard was in there and I had to put in the number for my NEW target Redcard with chip & pin.Could not make a purchase today. So annoying. Kept getting error messages or was asked to use different payment method, which I didn't want to do, that redcard savings was supposed to be mine! It did prompt me to check my bank account and make sure it hadn't been hacked with no funds for Target to get. Frustrating.
I have the debit card and they sent me a new one with a chip a few months ago.I have the debit card, not the credit card. My current one does not have a chip. Do the debit cards have that now? Maybe I missed checking the mail for a new one. I was able to make an online purchase with it a couple weeks ago, though.