Regarding GeoLink, I have only checked "position hold" and "altitude hold" in GeoLink setting Aid tab. Are maybe these two in collision? Or there's some wrong parameter I'm using there? By switching STABI on, I expected that heli will stay in the air, keeping current position and altitude. However it's strange what happened - so when I turned on the switch to activate Stabi (which activates GeoLink position and attitude hold automatically) - heli immediatelly lowered the collective and went straight down towards the ground.
Is there any idea what did I do wrong in settings?