Thanks for the extra info, I just see an images of your content browser and reference viewer. (You mentioned you’d also send the material graph?)
Seeing how many advanced materials comes with twin-motion, creating a new simple material for your meshes in UEFN will definitely be easiest.
If you’re still trying to modify the Twinmotion Material, figure out which one of those shown in the reference viewer is on your mesh and modify that one (could involve snipping out the bit about dynamic water effects since the RTs are named Drips and Ripples)