I did not try to save it, but the user name is editable in forum profile settings. Did you try changing it there? I mean the name right of the avatar, that you can also change as you want.
As trux mentioned, in the new Garmin forums you have the ability to edit your own forum name in your profile. Go to your profile, click "edit profile," then edit the name in the text box. Also, if your original…
During April 2019 the forum was completely reworked. The platform was changed from vBulletin to Telligent. Your issue was one of the problems that just went away.
This doesn’t seem to be the case for me when I go to Profile and edit (https://forums.garmin.com/) It would be nice to be able to change the Display namre.
The instruction works just like in seilogramp's post.
Browse to your profile: https://forums.garmin.com/members/arturus
Click Edit profile.
Change your username in the textbox.
Click Save profile.
Thanks, managed to change it. I can't have been looking properly before