What exactly is the problem with the UAV? You can't control it?

Deploy the UAV from the truck, then open your drone terminal, on the top left choose the drone from the drop down menu, then shift+left click where you want to make a waypoint for the drone. Once the wp is set you can right-click it to change it's parameters.

I noticed an issue where it kept on circling around a little like a heli that's lost it's tail rotor when in autonomous mode. Not saying it's the same issue since the OP was a little vague but that could've been the issue. I think it's a VCOM AI issue.

can`t open the terminal

i have also little troubles with UAV. It cant fly itself. When I make at UAV terminal waypoints, UAV fly in hover in 30 meters. When I am a pilot it is ok. But when I change to turret, UAV automatically raise height to 30 meters.

Yeah UAV keeps spinning in autonomous mode. Anybody got a fix?