Players kicked for packet flooding with player tickNot An Issue
The name says it above, Please take plugin down and update it. 

*** has disconnected! (Kicked: Packet Flooding: Player Tick)
*** has disconnected! (Kicked: Packet Flooding: Player Tick)
*** has disconnected! (Kicked: Packet Flooding: Player Tick)
*** has disconnected! (Kicked: Packet Flooding: Player Tick)
*** has disconnected! (Kicked: Packet Flooding: Player Tick)
*** has disconnected! (Kicked: Packet Flooding: Player Tick)
*** has disconnected! (Kicked: Packet Flooding: Player Tick)
*** has disconnected! (Kicked: Packet Flooding: Player Tick)
*** has disconnected! (Kicked: Packet Flooding: Player Tick)
*** has disconnected! (Kicked: Timed Out)​
Are you hosting at home? It seems like the server was DDoS'ed and they all dropped at the same time.
The plugin works fine for me.
Packet flooding is usually a networking thing and not a plugin thing.
Locked automatically