As I think you know, you cannot block a DDOS attack with a plugin. The only thing the plugin does is limit server workload by adding a queue file for players who send too many packets.

Wrong marketing. This plugin only limits amount of USE_ENTITY packets. This is not anti-ddos, this is a simple packet limitation which ViaVersion handles much better.
Additionally the packet queue is filled, but never cleared, this plugin has a huge memory leak.