I visited my little brother's island to check it out, and when I left his island, I couldn't get back to mine! It said it was deleted and I needed to make a new one. That island was over a year's worth of work. I had lots of valuable stuff, now gone. Please help me out!
If you accepted the coop, it is gone forever. It is not retrievable. What was the exact error message? Because the server doesn't say "It was deleted, make a new one".
So if you joined your brother's coop, your island was deleted and there is no way to get it back. I'm sorry, but rebuilding can be fun. Since the thread creator hasn't been online in three weeks and there is nothing more we can do, I'm going to go ahead and archive this. If you have a problem with that, please pm me.