Why can’t I change my username???
Click on your profile, go to Preferences and you should be able to edit your forum username there, unless you created your account using Google.
I can not edit the username
what’s the solution?
Do you mean on the forum?
I gave you the instructions above. If you signed up using Google, I don’t think you can change your name. You would have to delete your account and create a new one.
Yes, I’m in the forum