Unexpected message before taking off. DJI blocks my motors!

I ask the same question again because the previous answers didn’t solve my problem:
I receive quite randomly on my LITCHI screen the message “DJI-CARE-BLOCK-MOTOR” with no reference to any error number. I can’t take off about 30% of the time. Even now that I uninstalled DJI Fly App for days and use LITCHI alone. Not getting any proper help from DJI. They send me a long list of possible reasons. None apply for my MINI SE as everything looks OK with it. Compass calibration / GPS and satellites (16 or 17 in my area) / clean motors, sensor and take-off area etc… Any one of you received this message once? How to solve this specific kind of random blocking?

2 posts were merged into an existing topic: Running LITCHI without installing DJI Fly? Or after desinstalling DJI Fly?