Here are some fairly similar, and possibly useful threads: https://forums.pmmp.io/threads/chat-stays-open-after-addwindow.658/ https://forums.pmmp.io/threads/addwindow-without-the-block.711/#post-9238
But, unfortunately InventoryTransactionEvent is not working stably. I try to make similar plugin and take the same problem (can't cancelled event) I think, you should use ReceivePacketEvent instead InventoryTransactionEvent And when you need to cancel ITK - resend shop and player inventory
did you rode these threads? the first is not related. and the second doesn't really explains what I want to do.
You can. but how does this related? but thanks for the help. I already found out a better way of doing it SOLVED
If you found a solution, would you mind sharing it here to help out others who may have the same issue?