Simple animation from Cinema 4D not working

Total beginner with Unity here... I'm working on a AR project with Unity and Vuforia. Created this really really simple test animation (just a letter falling down on to a plane (used rigid body and collision body) with Cinema 4D and then imported it as. fbx to Unity. But the animation won't work. Any help?

 

I use C4d as well, Im pretty sure the rigidbody and collider don't import into unity.
You have to use the animation time line in c4d and make key frames. Then import the animation in to unity.

 

Or you can import just the object into unity and attach a rigidbody and colder then.

 

Tried again with just a simple keyframe animation. This time the animation works in the inspector preview window, but when I run it through XCode and try the actual AR, nothing happens. All I get is the cube just sitting there.