I have recently changed my username on Minecraft, and I am now unable to connect to a realm that I have created and own. I have found that other people have had this problem through my own research, but have no Idea how to fix this issue. I would like to play on my realm again, and I cannot change my username back to its original to try and do so. I would prefer to keep my changed username and still be able to play on the realm which I've worked so hard to create. This is a major flaw and bug in your system which needs to be rectified, as I fear I have now lost access to my world.
PLEASE HELP ASAP!!!
A worried Minecraft Player