The plugin is very functional and has a cool aesthetic, the code is open, so you buy it solely for the supposed support offered (as said by the developer himself), but don't expect support, the developer doesn't offer any support, I've already reported several errors and unfair mechanics, such as: creepers exploding outside the terrain destroying armorstands inside the terrain, mob shulker interacting with frames destroying all of them, you can push players into claims with wind burst, terrains STOP working if you use it in bungee mode and so on... and the developer simply stops responding and completely ignores the reported error.
If you are going to buy this plugin, have advanced knowledge in Java, as the dev will not make ANY modifications even if it is a critical error!
https://imgur.com/a/IShFGhn