Help!!! The gear ratio isn’t working. It isn’t even moving the wheel. The notor works, and there are spacers. I do not know what is wrong. Please send help

Are you sure that nothing is contacting the gears? More angles of the mechanism would be helpful too.

Will it spin by hand? Do the attached motor(s) spin in the devices menu and move the assembly? If the gears are being contacted by something external to the gear system or are experiencing too much friction, it will cause the motor to stop to avoid damaging or overheating itself. More pics or even videos could help diagnose the issue better

Maybe you could add some washers in there.