Callback mot working

Hi 

i updated to the new 2.2.6 and after this update no one can recall anything it keeps saying unknown command: callback 

all players do have the perms given for call back and its set to allow call back in the config file.

never had any issues before the update 

Please advice

we are running Real PVE if that helps at all 


Regards 
 

I managed to get it working 

Thank you