I remember this from a year ago with all the dupes on blaze spawners and the heads players doing this were being banned after getting caught.. I ran my own server before and know a lot and it would be so much simpilar to just find the people doing these dupes and ipbanning them. I don't want to say how you can set this up if the owner doesn't know how or anything just incase a duper see's this and looks for an alternative.
Support. Also to add, people are now hacking some beloved claims. I was recently menaced of being hacked, and I am clueless to where to store my items. My friend has told me a couple options, but still don't know. I could name the ones that menaced me, but further details of the names can be asked (BY STAFF ONLY) in a private conversation.
Thank you for the support. About your issue, I don't think I'm sure how to deal with it, further adding to how Survival is so broken right now. I'm sorry, I can't really help you, even as a staff member here... You could try starting a conversation with one of the Head Mods to see if they can help you.
The simple two ways I am thinking is: 1. Figure out how they are hacking the claims, and fix it. or 2. Remove the claim system. If we remove the claim system, we may want to replace it with another, or let the world be fully vanilla, and nothing could be protected, but griefed.
Support. (Rip my stacks of TNT that I hoarded from buying in the shop before they removed it to create by 110x110 to bedrock hole)
I do and dont support. I support it due to the fact that there is some issues with duping and limited world, which could be fixed by expanding the world size. Lag isnt much of an issue for me, and the economy is down a bit. I dont support it for the reason of progress. Many people, myself included have put alot of work into the survival world, and as The Hunter said, there are heavily griefed areas, and around spawn i plan on working on renovating it and cleaning it up for new players.
You cannot clean it up completely. You must understand there are still issues pressing, far bigger than personal progress goes. RIP. Thanks :P