Complicated to use and prone - she flies out again

Property me this cat flap bought and installed.
Built the thing is the same, set just right (program), which is almost impossible.
Press here as press, then it beeps and she does not but what you want.
The instruction manual is the way terribly.

Eventually I but then made to run the thing.

but

the cat flap is near the exhaust hose of the clothes dryer.
Since rising just before the humidity on the outer wall slightly.
Well, when the humidity rises outside, the thing starts beeping like crazy to.
It can not get more quiet easy.

By the way, the "Vordächen" on the flap is quite shaky with plastic clips attached.

It all looked so good in the beginning, is now flying the thing out and I try it once with a SureFlap.