Output Aeon Labs Micro Dimmer

My ‘Aeon Labs micro dimmer 2nd gen’ (DSC27103-ZWEU) is having issues.

The bulb behind it is not working anymore. The led of the dimmer burns red when turned on and is off when the dimmer is turned of.

When I measure output voltage the value is between 0v- 7v, depends on the state of the dimmer.

So far I tried an exclusion followed by a reset and an inclusion. No luck. Bulb is still not burning, output voltage measures still between 0 (dimmed) and 7v (not dimmed).

Any advice what is might be?