Okay. So. I didn't recently change my username and I cant get into any chests or break any blocks even though its MY island. I share the island with Scarletmoon32 and she has a private chest and she cant open it. All of the chests on our island are private, and we cant open any. Its pretty frustrating. If someone could help, that would be awesome. ~Chels (ChelsPlayzMC
It is a problem with the island protection, sadly moderators cannot fix that bug right now. You'll have to wait until it's fixed. Unless Cyp can possibly fix it for you.
Just checking that the blocks you're trying to break are within 49 blocks distance horizontally from the bedrock? Are you able to do /home?
Also it appears that u changed your name, please try to be honest with these reports as it'll help us to better assist you.
Try changing it back. if that doesnt work an admin will need to help. However this thread is old, it would be best to make a new one if you still require help