To be able to upload plugins you will first need a compatible variant that allows plugins.

Java – Spigot, Paper or Purpur

Bedrock – PowerNukkit or PocketMine

Easy way

Go to “Plugins” tab and install the plugin you want

Manual way

1. You will need to start the server so that it can generate the plugins folder.
2. Go to the File Manager tab on your server and click on WebFTP.

1. Upload the plugin you got from SpigotMC Plugins, Bukkit Plugins, PocketMine Plugins or Nukkit Plugins to the plugin folder. (Cracked Plugins are against terms of service)
2. Restart the server and join.