Help fix Model

[Nazujin]

Help!!
Could someone please help me to fix the mouth of this model please?
the mouth got broken... and not working properly in the animation...
it says the message bones are broken... and I dont know what to do...

PLEASE SOMEONE HELP!!

 

[Retera]

Did you just want somebody to select the top and bottom of the mouth and do the right click "Re Assign Matrix" function to rig them back to their corresponding nodes? I did that in the attached model if that helps

 

[Nazujin]

Thank you a lot sir!