Daddy Noel
So basically, while your Spigot server's player count goes up, your proxy count doesn't increase, so the plugin fails partially its purpose and also it looks mad sus.
For this, I coded a little extra plugin compatible with Velocity and its fork + Bungee and its fork.
Here is an example case of a server

plugins/ folder of your proxy.server-name: is the name of your server inside of the proxy configuration file (e.gs: survival_1de,hub1).