No Player Collisions! The easiest plugin to disable Players collisions in your Server.
You don't need external patches, external Packets API or other plugins, you just put the plugin in your plugins folder, restart the server and you are good to go.
This plugin uses packets to disable collisions and supports all types of Scoreboards without causing problems or conflicts with them.
Supports Multi-World servers.
It is tested and supports every version from 1.9 to 1.120.1 of every spigot fork, it's very light and doesn't affect server performances.
If this plugin doesn't work you probably have a plugin that is using Minecraft scoreboards teams improperly, therefore causing conflicts. Check that before leaving a negative review.