Guild Wars 2

Hello. I wanted to ask something about the contract. When I was walking around Ember Bay today I found a player that was doing something shady . Basically she/he picked a stash that was kinda hidden [metal covers made by skritt around it from one side, and big rock on the other] played as an asura [smaller figure, harder to spot in that dark area] and after using the contract on the stash, she/he just relogged and used it again. So we can just get a stack on contracts and go to one stash and then relog over and over. When I asked her/him if it’s okay to do stuff like that since I’ve heard about some bans because of some glitch [I wasn’t really following the story with contracts]. This person told me that they never heard anything about bans and they just wanted to open 50 of them.
So my question is, is it okay for us to do stuff like that? Or that is something bad and will be fixed soon-ish? Because what’s the purpose in walking around looking for stash if we can just go to the close one near skritt camp and open it infinitely as long as we have contract.
Looking forward to hear what other players and devs have to say about this. Thank you for your time.