Do @gamemaster if one is about they will contact you but they aren't around 24/7.
GMs are not devs. A GM can't help with world building problems or dev territory. So if anything is related to that, you'll have to report it through the bug report/ issue forum.
Oh this was a player possible cheating and breaking the rules on farming and not being with your pet while doing so. Like having your pet farm while you hang out in the keep safe from harm.
doesn't sound like an issue, as long ass the player is at his computer
if they are AFK with their pet outside somewhere on aggro or similar, that would be a bannable offense
There is also a report function ingame...iirr /report or /ticket shows you the commands and procedure in the chatwindow.
Not sure if it is still there, i used it once when we still had old frontiers and saw the reported person appear in the ban-forum a few hours later.
Their multiaccounting was really obvious (name-vw + name-drood in stick) though, so maybe it was just a coincidence