Relatively new server here.
Only two(ish) active groups.

Problem: One group is abusing the Plunder system.
They have one (or more) alt accounts that they use to attack themselves after a successful plunder to avoid losing coins.
This issue comes from *ready unfair system (not complaining—just telling it like it is). They have one heavy spender with 20k more battle power than anyone else in the game. And it's impossible (I'm being hyperbolic) to plunder anyone in that group without encountering this one person. So the only way we can "fight back" is to take coins from their other plunderers, which is not that much of a win—but hey.

Now they've found a way around this by telling each other where the plunder is happening and having somebody wait there to challenge them afterwards. A lot of effort on their part, I know.

How do I know this? Their alts have similar names as their mains, for one. And when I've successfully plundered people in their group, they would have people waiting for me to finish and challenge me immediately to take coins. Again, a lot of effort on their part. If I were more per*acious, I'd have taken screenshots. I'm all for group solidarity, but this is a little much. It doesn't help that there's a language barrier either. (Most of their group speaks Portuguese and poor English).

And I suspect that their heavy spender is using an auto-plunder bot. Here's more cir*stantial evidence: he'll plunder me immediately after i leave town. However, a couple of times he's forgotten to have it on auto, so I'd be able to defend And then he'd immediately plunder me again. Again, not on auto and I'd defend. There's also a bot on the server that messages people, advertising a gamebot (I suspect it's the same player—hard to prove).

Kinda sad that I'm on a server with such poor group dynamics.