Its power reserve may be insufficient. Expose the dial to direct sunlight to charge it.
Depending on the model, charging time for a watch to go from stopped to normal operation may vary.
Refer to the instruction manual of the watch to verify charge time.
・For some models, you can also use the abbreviated instruction.

Instruction manual

http://www.citizenwatch-global.com/support/guide/manual.html

Consult your nearest service center if it does not move even after charging.
World Wide Service Center

http://www.citizenwatch-global.com/support/network/index.html