Qubino Flush Shutter DC falls asleep

I have just installed a Qubino Flush Shutter DC to controll my blind. I have successfully integrated it with my Z-wave.me adapter and I have calibrated it. After calibration I could controll it from HA. Later the same day I had no contact with the Flush Shutter. The controlls in the entity in HA was greyed out. After a while I pressed the Ping settings on the Entity and now the Flush Shutter became active again.
To me it seems like there is a sleep functionality set. How can I disable it? Or it is something else that is the real problem?

/Niklas