I am having issues with the new Epic version of the game as well. WayneTech points and Add XP do not work. Unlimited health is knocked down in certain circumstances if I am attacked rapidly, and regenerates quickly if I survive the barrage. Super flying speed intermittently activates while gliding, turning on and off as I glide. Combo multiplier seems to work, as does Instant Missile Barrage, Unlimited Afterburner, and Fly Up. Haven't tested the rest yet.
Guys there is NO TRAINER for EPIC VERSION of the game:
www.cheathappens.com/20195-PC-Batman_Arkham_Knight_cheats
You need to contact PWIZARD and ask the process to request and fund it.
Likely it's already on a list and you can put credits toward it.
best,
Cal