Armature is not in Pose Position! Having the armature in Rest Position will prevent character from being animated.
Pose Position and Rest Position are modes that can be set in the Armature's Object Data Properties. When in the Rest Position armature will receive animation data but that animation data will not be applied to bones and thus the character will not be animated.
Select the armature object. In the Properties editor, under Data tab, make sure that Pose Position is selected.
An automatic fix is available. Simply click on the "Character Cleanup" button that will appear.