Once you enter a 'display name' and save the changes, it should automatically display on the forums what have you entered in the 'display name' bar, instead of your login name. But mind your page on itch.io will still feature your login name.
I want to customize my profile page. I want my name to diseappear from the profile page where I publish my future games, because I want to make a custom logo on my itch.io page, I want my name to disappear from the page. Look at the picture I have on the first post. Where the red circle is, I want that to diseappear. And I want to put a custom logo on it's place.