Costco canceled my last order, and sent me a note to check my card, that it had a problem.
It was a Costco Shop Card for $450 and they drained it down to 2 cents and then canceled my order. I think the real problem was I was trying to buy too many cards in too short a time frame. Maybe an hour and a half later the money was back, so I texted my son and asked him to order me 2 gift cards, using the supposedly defective shop card. They filled his order in about 30 minutes and he sent the info on to me. They have their own separate executive membership, so no issues.
I still need more gift cards but was able to apply $2400 counting the Sam's Club $400 I picked up earlier. I also have a couple of 15% off $100 offers, a Home Depot 10% offer off $150 and more usually come along. I may try more Costco if the cards last a little bit longer, as my DD has an account plus my son offered to try to do another order. Just have to buy some more shop cards.