Your profile and optical trains are OK. If you changed all the cables..etc then I suspect the only remaining issue is that the RPI is somehow bad. This happens very rarely but it does happen. I just tested ASI EAF with StellarMate and it's detected fine, so it's definitely not a driver issue. It could be a USB conflict issue as well, but I don't see if you tried connecting ONLY ASI EAF?
Create profile with this:
Telescope Simulator
CCD Simulator
ASI EAF
and physically, nothing connected to StellarMate BUT ASI EAF.