Velocity

Make sure to not be using "NONE" forwarding. You'll need an extra port for this tutorial 

 1. On Velocity 

 Go in your file manager 

 Go in plugins folder, upload GeyserMC and Floodgate 

 Restart the server 

 Go back in the plugins folder 

 Click on the "Geyser-Velocity" folder 

 in the Geyser folder, click on config.yml 

 in bedrock.port set that to your extra port 

 then, scroll down to remote.auth-type 

 set auth-type to floodgate. 

 In floodgate: 

 set set-floodgate-data to true. 

 2. On Backend (Spigot/Paper) 

 On all of your backend servers, upload Floodgate-Spigot in the plugins folder 

 restart the server to load the plugin 

 download the key.pem from Velocity's Floodgate 

 upload the downloaded key.pem in the Floodgate-Spigot's folder (on your backend)