I changed my username from aliki777 to NickNick707 and when I changed it I logged in and was on my island but when I tried to /home it said I have no island.
Hey, this happened to me as well, I changed from LiamSearson123 to guitar805 and I lost both my island and my donor status. Help would be very welcome but so far nobody in-game has been able to help .
Post here http://www.skyblock.net/threads/lost-your-donation-rank-with-a-name-change-post-here.69081/
^ What lycel said. Also make sure to note down the coordinates of your island if you lose the bed a mod can easily TP you back to your island.
Nick T the coords to your island are: Hidden Content: **Hidden Content: Content of this hidden block can only be seen by staff members** for future reference Sleep in a bed, and you can do /homes to get back to the bed. If you lose the bed or it gets destroyed, refer any moderator to this post and they'll be able to TP you back to the island.
Thanks! I posted in the thread you linked. I will try and get the locks fixed the next time I log on.