not sure whats going on bro. let me double check every thing. I'll swap name out, but do try again so we know you are able to make your own changes in the future. I don't mind doing it for you, its just that you should be able to, is all.
* gotta be you or your profile is cursed. everything looks fine.
There are 2 ways to access your profile.
1. by clicking on you name next to you sig in any post, or by clicking the profile button on nav bar .
If via the profile nav button, you must hit "save" after you edit name.
If you enter the other way as mentioned. you should see this "edit" image
[You must be registered and logged in to see this link.] appear when you mouse over just to the left of the editing name and/or the area you type in your psn. click on it. box will appear. enter name. you'll then see this image
[You must be registered and logged in to see this link.]to the right of the box, click it to validate. done