Stuck

Spoiler: Hint 1

It sometimes takes a few tries for B to autopilot in the right direction.

Spoiler: Hint 2

B never needs to climb the stairs of the moveable arm.

Spoiler: Hint 3

Regarding the moveable part of the platform next to the metal column, it needs to be up for some stars and down for others.

Spoiler: Spoiler/Solution

Position B near the elevator, and rotate the moveable arm so the end is over the star you are trying to get. Tap the end of the arm. When it works correctly B gets stuck on the column, then eventually breaks free and falls to the lower level, but still tries to follow the path of the arm.

I found a use for sticky bot.

Spoiler: Surprise

I let Sticky bot get the star that sits over the junction between two sections of fencing

Sticky block is annoy but I guess that's the point of the demo - stay away. I don't see the point of a sticky block?

The original level doesn't work in the latest version of Mekorama, so here is an alternate version:

Spoiler: Alternate version of Stuck

Thanks so much for the alternate version that was a lot of fun. Didn't realize a sticky block would have that effect !!!
Also a good thing you put up high rails as B was crazy all over the place
Also really loving the extra stars that add challenge and interest points.
This level seems unique in that there was no win block per say, you had to get all three stars to win

Thanks, @Sammy 5!