You did not say if it was electric or manual. If manual, my previous TT had an awning arm that sometimes stuck. I'd have to flip the catch and pull the awning strap to begin extracting an inch or so, just so the switched arm was free. Then I'd have to go to the other arm and pull on the arm, or jerk it to free up the arm.
After about the 3rd or 4th time this happened, I studied the situation out and realized the awning cover and arms were not true square. The end of the roller slid just a bit. Not enough to really be noticed, but enough to cause a binding on the arm when closed up. I would simply tug on the awning and the roller and slide it down a tiny bit and that would cure it for a while again, until it started sticking again. It took a whole 10 seconds to give the awning and roller a tug in the opposite direction every now and then, and then, I never had problems again, because I knew what to watch for.
Your's might be the same problem. The roller arm has slid just a little where the awning slides in the track, causing a slight bind on the arm when retracted.