ALUPROS YYGL35 actuator limit switch shifts after use—how to fix end stop drift?

Hi guys. I am putting in motors for external roller shutters and have a problem adjusting the actuator. Well, the ALUPROS YYGL35 actuator has two allen screws for adjusting the ends - standard. I adjusted the bottom end stop, it stops nicely, adjusted the top end stop - same thing. However, after a couple of times of opening and closing the roller shutter, the upper end stop works earlier and earlier. More and more of the roller shutter is visible when it is tripped. Has anyone had a similar problem and know how to solve it?
Regards

How do you control this roller shutter?

I had the same problem. The cause, a badly fastened roller shutter on the shaft and a motor not fitted correctly.
https://www.youtube.com/watch?v=iiJ1fRvnNHc
https://www.youtube.com/watch?v=4ecwga2rw0Q

If there are two roller shutters on one switch this can also happen.