Sometimes a player will find a stash, hide/unhide the same stash multiple times and it can be confusing to know if they are opening one stash or multiple at the same location. If you could change the coordinates to the stash position or add the stashes id to the message I think that would make it a bit easier to spot the trouble makers.

As an example, this is one stash opened by the same player multiple times with different coordinates for each message.