The problem is that in your code you're just telling the platforms that, if the player is touching the screen, the platform should move or not, but you're not telling WHICH platform should be moving or not.
To select an instance so it works you have to either use a "pick" condition (like platform -> pick nearesth/furthest) or use the "on object clicked" condition so it picks the platform you've clicked on.
Here's the capx: dl.dropboxusercontent.com/u/2383513/linkedOUT/PhysicsGame.capx
I've also made the platforms rotate only if you click on it's borders, hope you don't mind! I made 2 different image points on each side and compare them to wherever the player is touching, so if the distance between the touch and the imagepoints is less than 30, it rotates instead of moving.