Shaiya NPC Problem!

hey, im helping a friend making a server, we changed client with done NPCs and more, but when we try to buy anything from any NPC nothing happens, any idea?:rtfm:
ive been asking to much lately ik, but im trying to learn and fix every mistake i have done till now! thanks for your help everyone till now.

Solved
#Request to close

open ShStudio then connect on SQL first then now you can edit NPC you want example the NPC merchant .. then save and start the server...