Change Forum User Name?

I'm back on this Dell forum. It's been 20 years. I been building my own PC's since then.  The new Alienware Aurora was so nice and stylish I had to buy one. I actually bought 2 matching ones. I've keep 2 PC's beside each other for 30+ years.  One is always my main PC, the other I run VM's in, 37 different OS's.

Anyway my question. How do I change my user name? It's grayed out in settings. I'm surprised it's still active. It's been 20 years since I made a post here.

I have a few more questions about the new PC's, later.  I love them. Not a gamer at all, just like the look. I was very disappointed that the Alien head it's not lighted on the liquid cooler.  The pixs make it seem like it would be.  It couldn't have been that hard to do when they were designing it.