I have noticed that quite a few players get a bit confused about receiving their vote rewards on the server. Many, including myself, often get the first impression that you get the items globally rather than specifically the server that you are on. My suggestion is to add a message in /vote stating that you need to be on the specific server that you wish to receive the items on. (Referring to this - click here) I also checked the link through the forums (click here) which doesn't state it anywhere either. Adding it in both places may clear up some confusion for the players.