Does anyone know stuff about garage door lifters ?

I have a europro door lifter fitted. I have a canopy door so I have fitted the bow arm adaptor.

The lifter can't shut it properly and also only lifts it half way up.

 

I'm not quite sure about yours, but on mine there is a dial on the side that you can turn to choose how far you want your garage door to open or close whenever you push the botton.