Question Blender-Rigify rig not working in Unity with Mechanim

Hi! I've been making a human character from scratch using blender. I've rigged it using the rigify add-on in blender as well. Here's a picture (in blender):


I then exported it as a .fbx file and imported it to unity. I then configured the model to the standard (4 bone) setting, using that model.

Everything seems ok in the configuration menu thingy as well:



But as soon as I add a standard mechanim animation (that I've tested and works) to the animator and run the game, it just assumes a crouched position and doesn't animate as it's supposed to.

From the following images, can anyone tell me whats wrong, or what have I done wrong?

 

it hapens to me as well I don't know bro I need help as well

 

I thought it had something to do with the muscle limits, but they also look fine.