Misspelled username

I misspelled my username when signing up somehow. I don't know how I missed it; there should be another 'L' in it, it should be Falcolmreynolds, but it's wrong on here. Just wondering if there's any way to fix that, because it's bothering me. A lot.

You can change your username by visiting https://web.archive.org/web/2020/http://www.minecraftworldmap.com/forum/u...changename

I can't access the page. Not sure why, but I'm not allowed.