Can't invite friend to island.

When it happened (date/time): past few days, I have tried repeatedly

Location (server number): Idk if there is a server number on skyblock, I think that's the problem. idk how to get him on the same server as me.

Screenshot/Video proof (if required): (It just says "that player is offline or doesn't exist" when I invite him)

 

Hey pandannihilation, you are correct, your friend has to be on the same server as you for you to be able to invite them to your island! So use the command /tpa (username) to get to different skyblock servers, also make sure when you use the command it's the exact IGN with caps if needed. Although the command has been a bit buggy as of late so be patient with us if it does not work, the devs are working their hardest to get all the bugs fixed, thanks.