You can change your username in Settings --> Username, and capitalization can be changed as often as you want. You can add or remove social links in Edit profile --> Social.
@Zickoi The real question is, can you read the posts above you?
Sort of related, didn't want to make a new thread and clutter the feed.
Is claiming inactive usernames broken right now? Did some digging on the forum history and found the criteria as being inactive for at least six months and having zero runs submitted. I've tried to change my username to a couple of ones that definitely meet that criteria (both have been inactive for years) and am having an error saying the names are being used by another user.
It may of been removed since changing the capitalisation in your name counts as a normal name change where as before you could update it has much as you want
@Butterfly That's becuase it's in Account & Security lol