Whenever this plugin is active and the server restarts while a player is dead that player will get the 'Local player is being set up multiple times' error and will either be unable to move, glitch all over the map, have no hitbox or be invisible

Very unlikely to be caused by this plugin, it simply sends announcements and doesn't manipulate players at all. For that error you are getting to happen, someone would have to be messing with player respawning, sleep, or creation oddly.

Oxide doesn't modify the player by itself, so it'd have to be a plugin that does what I mentioned previously (this plugin doesn't.)

If you are having an issue with the plugin loading, please create a separate thread for that issue along with details.

Even with only this plugin active it happends, so it cannot be another plugin