I’ve got a rigged character and a couple of Keyframes applied on it, but when I hit Render, it renders the character in rest pose. When I switch back to 3d viewport, it shows me the character as it should be in the frame according to keyframes.
On your mesh you told Blender not to use the armature modifier on render. If you want it to move, simply check the box use modifier in render in your modifiers for your armature modifier.