your welcome 
question 2… I think your character is trying to occupy EXACTLY the same space as your actor, this is why he sometimes runs around to the other side. Set a cutoff distance, so your character will stop
question 3… a few options, including Branch if the actor is a landscape and do one of the following
- move to the clicked location on the landscape instead of the landscape actor location
- or do nothing and wait for the player to click on another actor
question 1… I’d wait until the above two are fixed then we can see if this is still an issue