How do I edit "Additional Information"

When I very first started my account, I was able to enter the "Additional Information" that is recorded under my avatar: "Biography", "Location", etc.

How do I edit that information now? I've tried edit profile, edit avatar, edit signature, edit just about everything.

The forum side profile edit function is currently broken. The story-side (accessible through your control panel) can be changed and the new profile seen - if you're a writer. If you're just active in the forums, it's a waiting game until it's fixed.