Android Pay working on unlocked 920T?

Anyone got Android Pay to work on their factory unlocked (XAR/Cellular South) 920T? I get an error message after I input the security pattern or fingerprint (see attached screen shot). I recently flashed the T-Mobile MM firmware, so I wonder if that is the problem. My phone is unmodified (not rooted, 0x0 KNOX). I never used Android Pay when the phone was on the XAR/Cellular South 5.1.1 firmware.

Attached Thumbnails

 

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