I thought this would work, but it didn't. I'm wondering how to keep information (from configs, to databases, to anything else Java can store information) of a player, and restore their previous information, if they were to change their name. When I looked this up, I found a common trend: Code: player.getUniqueId().toString() I used that method, and recently changed my username, then got on my server. The information wasn't stored! Please tell me what might be wrong with the above code, or if UUID is not now you get it. These issues pose a threat to my server.