This update has fixed the following:

• Players will no longer be able to break the plot floor or wall blocks regardless of what type they are (this only applies in the mine, they can break the blocks elsewhere on their plot).
• Fixes the bug where if a player left after placing, but not confirming their mine, they would be unable to later confirm it. However, if you have not confirmed your mine and the server restarts/reloads, you mine will disappear and you will need to obtain a new one.

This update adds the following:

• An option in the config to determine the plot ground level (Y value). If a mine is placed higher than that amount, it will NOT be filled with the block you set when it is removed.

Hope you like this update!