We love people supporting us, and it takes a huge amount of work, donate here. Orebfuscator does not work properly with ProtocolLib for 1.8, you can use my special version here.
(Also try removing SkinRestorer if disconnect issues if you use it) Kicked for too many packets? We include a packet limiter if you need to disable this simply set the limits to -1 in the config. Compatibility is the best when on your backend servers. Do you use BungeeCord / Velocity? Ensure you have updated it first, you can use the plugin on all your backend servers OR BungeeCord/Velocity. If you're confused what Via* plugins you need click here.
Note: ViaVersion only supports newer versions, even on subversions! Use ViaBackwards and ViaRewind to allow older versions to connect.