Some problems with my static mesh...

I am probably having problems with UV lightmap, the project was brought by Datasmith from 3ds max. The mesh shines without having any emissive material, to avoid bugs I made the material inside Unreal.
I’ve done the re-import for FBX by setting up Channel 2 and leaving the maps already set up as I have seen in some tutorials, but it seems that nothing solves it, lightmap resolution has already made it very high too, I checked it and it’s on Channel 2 UV inside Unreal.
Does anyone know how to solve it?

I tried re-importing the project again with new UVs in version 4.22 of Unreal, but the problem still persists.