Ok my friend joined my island and couldn't build/ do anything so we tried to re invite him. he did /leave and left the island but when i tried to re invite hit he was still on the island so i did /island kick travis0100 and the command is broken can you fix this and add travis on my island so he can build stuff.
Honestly, the skyblock plugin is really glitchy with invite and kicking people. Spoiler: My Experiences On the last sever reset, I was stuck with my island (couldn't leave/restart) because I had inviteed other people, although they hadn't been online for so long the plugin didn't register them as players anymore and it always said 'please give leader to someone before you leave.' Thats why I quit the first time. I suggest opening a support ticket.
Try doing /leave until you can break blocks on the new island. After that, reinvite your friend and all should be fine in the worlds.
Agent I have left the island and tried to rejoin but it still says for Pine that im already or still on his island
Try /leave until you can break things on the new island that you get teleported to. Sometimes this may take more than 1 try.
i know how to fix it same happened to me my friend got kicked without i kicking him just do /is kick all then invite them all again <3
Try /leave or maybe if you can't leave the island create your own one then delete it then ask the other player to invite you back to there island.
This happened with @xBMAN and I. It can't be fixed. He was randomly just kicked from my island, but it still showed that he was in my island party. I tried everything.