not as simple as described

Make sure that I am not so talented in such things, but that I am certainly not alone in the world admit.
So just like in the video is not the installation! At least not if you do it for the first time.
I've read through the manual carefully several times. However, I felt everything as a bit tedious. The adapter can be good though screws on the adhesive and it is very difficult to screw in then into the hole. And that is important because otherwise it does not work as shown in the video and the adhesive does not occur when the opposite hole made, but out of the opening in which one fills him and that should not now be.

Honestly, I was quite at swearing.

But that should please anyone hold to buy the product that is sent with such things!