Hi! I was wandering if it is possible to change my username, thanks! 
Yes, it is. What would you like it to change to?
As @aschrijver said, it’s possible to change your username, hence you should tell what it should be so we can proceed.
Hi! I was wandering if it is possible to change my username, thanks!
Yes, it is. What would you like it to change to?
As @aschrijver said, it’s possible to change your username, hence you should tell what it should be so we can proceed.