Hi there. For the first problem you need to crate a new layer, and in it's properties set the paralax to 0,0. then move all GUI element to that layer.
for the second problem, i think you should set additional conditions to the player. so, "when up = animation up", "when up and left = animation up", "when left = animation left".
you'll need to place two conditions on the event and it will work as an AND.