The most recent player to join my server placed his townhall underground wanting to make a dwarven town. We realized that it would take a lot of excavation so we deleted the colony so we could blow up a bunch of space for it. Towards the end of doing so he went to place his townhall again but it won't let him do it anywhere near where the old one was. It switches between saying that there is a colony there and other things like the nearest colony being within 600 blocks. It even will say that the colony id 4 (his deleted colony) is too close.

Try again to delete colony id 4. Did it get properyl deleted? And ye discord is good for these things

Please use the issue template next time. Or for questions like this one, ask at the MineColonies Discord.

If you haven't used it already, you may find the abandon command useful. Check it out in more detail on the wiki.