Bike issues My kids bike is fully charged and won't move what do I do?

Either the wiring to the battery is not correct or the batteries need to be replaced.

Have the battery load tested. It may be fully charged, but not any good. Most bike shops will load test the battery for free.

possibly you have water in the electrical, let it dry and retry.

A bike of that vintage should have 10W40 in the summer, and 10W30 in the winter.
Check your fuses for the starter issue, and also check the neutral and clutch safety interlocks.
Most bikes won't start is they think they are not in neutral or the clutch isn't pulled in.

Customer Service give their customer service a call

ride it down hill, and only during the day. no, just kidding. gonna need a little more info before diagnose can be achieved.. does bike crank over? is battery fully charged? all fuses OK?

fully charge the battery,
use a multimeter to check it,
then put it on the bike,
press the pedal and then check it again
if the battery reads lest then half,
change the battery.