Only certain blocks get removed from the map automaticaly. If you want additional blocks to be removed you can add those to the list found at datapacks/Zero/data ...
The config is located at config/not-enough-minecraft.json. Rendering on the server like this is quite inefficient and will increase CPU usage significantly, which can cause issues on lower end setups.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results