I had been seeing a similar but worse issue. 2 InComm worked, 3rd InComm failed. To mitigate, I would swipe 2 InComm + 2 BHN max then go to separate Walmart to repeat.

that was working until last week. In the last 3 days every attempt to use brick & mortar purchased nComm at Walmart fails. Online purchased InComm still BAU at Walley, but Safeway, CVS, Walmart purchased InComm (Sutton or Patward) no go.

the result is new too. Third card still locked up. First two did NOT lock up, but when I called CS the automated system says “your transaction at Walmart was declined”. Cards later worked at Safeway