Anyone with airbrush experience please help!!

My airbrush is driving me nuts! So I started today with my airbrush being a bit spotty (but spraying some paint), so I stopped and gave it a good cleaning. But when I went to continue painting, nothing would come out of the airbrush. Its a gravity feed so I checked to see if the paint was bubbling in the cup but it wasn't. I took the airbrush a part again to see if I missed something when I noticed that the needle and parts were completely dry-meaning that the paint wasn't brought up from the cup.

I have cleaned and fiddled with it for hours and I can't figure it out. I even started messing with my air compressor which is always left at the same setting, but not even that has shown any result.

I only use createx paint, so I don't think its the paint either, and it won't even take up its airbrush cleaner fluid.

Please help! I'm about to chuck this thing out the window!