looked it over, one reason I can tell you why this plugin won't work is that players can simply afk farm with this it also allows players to duplicate items which seems to be a problem. This plugin is currently out of date. you can also make use of
/LWC mode drop transfer select which will allocate all the blocks you break into that chest for more info on how to use this command go here
https://sentinelcraft.net/forum/index.php?topic=7860.0 . It pretty much does the same thing as what the plugin offers except it goes into a chest rather than your inventory.
> if people accidentally mine blocks over the void the game might be unplayable
We never had this issue, the reason you can't build over the void is most likely another player's skyblock.