updates?
check to see if there is power to the motor. you will have to lower the headliner for that. if it is not making any sound, the motor may need to be replaced.
other issues have been broken guides or clips, but usually you get SOME amount of movement with those.
i don't recall exactly, but reinitializing may or may not work. I think it requires SOME movement of the glass.
check vehicle battery health - voltage AND CCAs. weak batteries can do funny things with anything electrical.