The raffstore does not stay in the guide rail

Hello,

we had venetian blinds installed on 3 windows instead of roller shutters. Unfortunately, on one of the venetian blinds, the guide nipples broke off after about 2 weeks while driving. We complained about this and the venetian blind was finally replaced after 5! months. The 2nd venetian blind came out of the guide rails shortly after the failure of the 1st one. This problem was also fixed last week. Today, the end position of all venetian blinds was adjusted. Shortly thereafter, the venetian blind came out of the rail again, see picture.

Does anyone have similar problems? Could an incorrect rail possibly have been installed here? A wind sensor is installed and working. The problem is that when the venetian blind comes out of the guide rail, the guide nipples catch on the roller shutter box and break off sooner or later.

Also, the question is whether money may be withheld for the long downtime.

Oops, that doesn't look good. Which brand/system is that? I had some for 12 years; no problem.

Ups, that doesn't look good. Which brand/system is that? I had some for 12 years; no problem.

The venetian blind is distributed by the company GROWE/ROLTEX. So far, they haven't run here without errors for more than three weeks at a time. Therefore, I suspect an installation error.

Does the image only appear that way, or are the slats at the top under tension?
It looks as if the width does not fit.

It actually looks in the picture as if the slats are simply too wide.

Here are some photos of the right side:

as well as the left side:
So the venetian blind is not exactly centered. I think the width is fine since there is still a lot of space on the left, or what do you think?

The problem is, among other things, that the venetian blind does not stay in the guide. On the next trip, it will then get stuck in the roof box.