Adding a GuiObject on product purchase to ALL servers (cross-server updates?)

I would like to achieve a script that, on purchase of an items (developer product) it will add a GuiObject to all players of a game. How would I do this?

I have been trying to do this for the past 4 days, and have gone almost nowhere.

I have tried using this MessagingService Wrapper by 3dsboy08, but have not gone anywhere with it. I do not understand it nor could find a good guide on it. Any help with how I would do this?

Do you mean the server the current player is at or all servers?

he meant when someone purchased it it would add a gui object to all servers