Read the updates notes or the plugin will break if you use proxy commands.

Addition: Support for Velocity, find the passthrough plugin here.
Change: Command formats for bungee have been changed in order to reflect the update that adds support for velocity (information on the wiki has also been updated). You need to manually change all of the following bungee command formats to the following:
This update has been kindly sponsored by Lunar, check out their server at mc.cosmicsurvival.com! ❤