WTH is wrong with two motionsensors?

I have two motionsensors.
One turns on a light for 3 minutes.
The other turns a fan on for 30 minutes.

Today i noticed strange behaviour.
One senor constantly detected motion while there was nobody.
I excluded it from the z-wave network, did i full reset of the device an included it again.
That worked.

After a while the other sensor started with that strange behaviour.
So…same procedure and worked normally.

Now the other sensor starts again with that strange behaviour ???
WTH is wrong here ?
I removed both automations but that doesn’t help.

I tried to do a restore but that doens’t work.

I’m coming from fibaro and thought everything would be better.
Where did i myself get into ? :hot_face: :hot_face: