It's possible that Samsung Pay checks if Knox is tripped (which e.g. Android Pay doesn't do).Hey,
So I'm not sure if you remember me, but I posted in your other kernel thread and I finally followed your advice and got a full Safety.Net Pass by flashing the universal safetynet fix via Magisk (ver15.3). So I use MagiskHide and hid all of Google's framework, Android Pay and Samsung Pay and Samsung Pay framework.
So now Android Pay works and it's great! I also tried with Samsung Pay and it sort of works. I'm able to get pass the initial screen but when it asks for which type of authentication to use, it just freezes forever at the screen where it asks for your fingerprint or use another method (PIN). No matter what I press it is just frozen there! I am using their latest apk from apkmirror. I remember back when Magisk wasn't powerful enough to hide itself form SPay, the app would detect my root and a popup would appear saying that I am rooted. But now there is no such popup so I'm assuming either Magisk upped their game or your kernel is just amazing. Either way, it can only get past another step :/
I am on BatRom v.1.5, with the Bat Kernel. Any insight into getting past the security step? Thanks!