I have a recently got a 13-plate Audi Q7 4.2TDI S-Line Plus and the air suspension really hunkers down once the car has been parked for a day or two...is this normal?!
It gets up fine again every time the ignition is turned on.
That looks like it's in the loading mode (button in the boot to drop it at the back only).
It's possible you've got a leaking strut that has the annoying habit of taking the compressor with it as it overruns when the engine's running to maintain pressure despite the leak.