The dev is kind and friendly, and the function itself in plugin description works fine.
However I have to say, current features may don't worth 19.9EUR because cheaters can easily fake their client brands, and some popular mods for survival can copy parts of your server's map.
Looking forward to further update!

Just think this plugin doesnt worth 19.9EUR.
I purchased this because havent fully read information before.
For blocking World Download Mod its okay, but tbh cheaters can fake their brand, and some mods for survival can copy some parts of your server's map.
So as i said, this plugin doesnt worth 19.9EUR unless it could have more features

An excellent enhancement for my server. After running it for several days, it has successfully blocked all world downloaders we could test. Definitely deserves a 5-star rating!