Originally Posted by greatpaul

Hi I recently had new issues with USB cards. The Walmart POS tends to decline $500 swipes randomly, and error codes are either 51 or 58. It does not really mean the cards have issues - if I bring the same card to the next wally 5 minutes away, it always pass the transaction. I even have to prepare a chip debit card (real card) in case only the first $500 passed but the second failed for a $1K transaction.

My concern is US Bank started to monitor the swipe pattern of those $500 load and offloads, and intentionally block some of the transactions. I can't think of any other reasons but it all happened recently. I have been a gamer since 2018 and consistently swipe 1 - 6 cards each month. Anyone else experienced it?