(not just trying to up my posts#... different topic)
Posts in this thread have talked about (1) using Priority Pass Select tied to an active AMEX Platinum card, and (2) using Priority Pass Select tied to a canceled AMEX Platinum card. I don't see any discussion about using Priority Pass Select tied to a different credit card, where the change from AMEX Plat to the new CC was done before Plat was canceled.
Perhaps the issue about the canceled Priority Pass cards is due to the fact that
the credit card attached is canceled, not specifically that
the AMEX Platinum credit card attached is canceled?
Just a thought. Of course, this doesn't explain what
Mocha experienced.