Alexa does not recognize the Fibaro Roller Shutter 2

I installed three Fibaro Roller Shutter 2, two in the shutter and one in the awning.
The problem is that the roller shutters are the only devices not recognized in Alexa.

A workaround is to use the groups app and create a light device with dim capability and group the roller shutters. This makes it visible to Alexa.