Fibaro shutter 3 problem

I bought a Fibaro roller shutter 3 and added without any problems to my Homey. By opening the device n my computer I get a dimmer beam on my screen. Why not an up down and neutral button?
Then the device don’t respond correctly when I chance certain parameters, like the parameters 156 and 157 to determine the time.
Does somebody has experience with this device and can give me an advice.
Thank you in advance