Import animation fbx doesn't work

I am trying to import an animation made in Maya for a humanoid character but so far have no success.
when i’m clicking the “import FBX animation” option, under file in the animation editor plugin nothing happens. same for drag n drop the FBX file directly to the Roblox Studio.

Has anyone experienced similar difficulties? If you have more affective way to import animation from other software I would love to hear about it