Where do I start...
Since you made the grid 80x80, you need to change cell size to 80 in Pathfinding properties, and in event 12 - "Move 80px.."
Your grid is misplaced, its left top corner should be at 0x0.
And why do you need so many MOVEMENT sprites? Remove them and use a tilemap.
Finally, you have a mess with layers, half of the map is on the HUD layer for some reason.