Engaging the LFO fails with G-force

Hi, this happened to me:
After setting up the LFO to use the G-Force accelerator with Mother/Distance: Nothing happened!
Mother did not move at all. Checked my settings twice. All correct.
After switching the OP-1F off and on again it works. Now Mother moves forward and backwards on tilting the OP-1F.
Am I doing something wrong? I could not replicate the issue though.

I also had a similar issue with track merging. New track has sound only after switching the device off and on again.