All Aircraft have 100% Fuel - No Refuelling Needed

As title.

Both my GA and Commercial aircraft are landing with 100% fuel. No refuelling is taking place, I’m assuming because no aircraft require fuel.

Refuelling was working when I played yesterday - on build 21.4. Now on 21.8

I presume you have it enabled and available?

Yep, I have both AV Gas100 and JetA1 depots and fuel tanks, trucks for both types, service road connected with checkpoint, and both enabled in Operations.