So red_partyhat was being an absolutely amazing person toward me and I wanted to return the kindness by giving him permission to my island. The problem was that when he accepted it deleted his island. I feel absolutely horrible and was hoping if his island could be restored as it was a very large and expensive island.
So if i get this right, You invited your friend with /island invite (name), and in this order it will ask your friend/Red_partyhat to accept or decline, it also tells him that if he accepts he will lose hes island. So in my opinion you could have asked members if theres a way he can keep hes island and still be able to build on yours, and there is With /island Trust (Player) he will keep hes island and still be able to build (on your island), And im not staff so theres no way for me to fix this, but im sure Some Admins will take a look at this soon and probably help you. I hope it turns out well.
Thanks I suppose? I only made an account on the forum to correct this mistake of mine. (P.S. I wasn't always the "least active" mind you. Either way that was years ago.)