No support, it disables fastlogin even though in the description its showing that fastlogin is supported.

It is Good Plugin and I like it Cuz i use its spigot plugin on my server but now i have to use it on velocity server but can anyone tell me why that was showing me [09:45:49 ERROR]: Unable to load plugin plugins/AuthMeVelocity-Paper-4.1.1.jar

This is such a good plugin! I am searching for it for a long time,btw should I install this plugin on both Velocity and the backend Spigot server?