[12:09:30 WARN] [luckperms]: LuckPerms already has data for player 'Endy19' - but this data is stored under a different UUID.
[12:09:30 WARN] [luckperms]: 'Endy19' has previously used the unique ids [eff3cc49-b9a4-40a0-9d32-98bf14c6dd67] but is now connecting with '270c5b09-531f-30fd-91c0-bd71b4b037e6'
[12:09:30 WARN] [luckperms]: The UUID the player is connecting with now is NOT Mojang-assigned (type 3). This implies that THIS server is not authenticating correctly, but one (or more) of the other servers/proxies in the network are.
[12:09:30 WARN] [luckperms]: If you're using BungeeCord/Velocity, please ensure that IP-Forwarding is setup correctly on all of your backend servers!
[12:09:30 WARN] [luckperms]: See here for more info: https://luckperms.net/wiki/Network-Installation#pre-setup