I'm noticing a number of mostly new users have used their email (or partial email) as their username. To remind everyone, you will want to avoid doing that as username space is limited to 16 characters plus you do not really want to share your email too often for privacy reasons. There's a place for email which you use to validate and login to CCF but your username is not that place. We deliberately hide your email address as best as we can to prevent spammers from scraping it.
You can all independently change your username at the top of your account details page under your profile or go to the link below directly:
You can all independently change your username at the top of your account details page under your profile or go to the link below directly: