Hey all, just to follow up.
I ended up putting the electron in a metal box and connected to the Lora module outside using a shielded cable. Managed to get the range up.
I previously wrapped the electron in 1 layer of foil which didn't work. I ended up wrapping it multiple times and it started working... I probably had gaps the first time around..
Does anyone know where I could get a PCB shield that can cover the electron.. cant seem to find one big enough!!