Broken Autopilot 747

I’m trying to do some challenges with the 747. Autopilot is so broken that I can’t complete any.

I mean, it doesn’t follow vertical speed at all. Doesn’t follow speed even if I have auto-thrust activated.

Most buttons can’t be clicked and sometime I can’t even click to deactivate autopilot.

I don’t know if it’s a boring thing, but A320 autopilot is much more easier.

I think I will just uninstall that plane.