It is really annoying that you can't change your game name after TH5. My friend got hold of my phone and changed it by himself as a prank on me. Now I get a lot of vulgar comments in chat due to game-name.
I checked how name is changed and there is no security for it. Just type CONFIRM and it's done, anyone can do it on your device. Any changes in game account should be restricted by a password, that would be good.
Also, can anyone help me to reset my game-name to original please ?
