Welcome to HBH! If you had an account on hellboundhacker.org you will need to reset your password using the Lost Password system before you will be able to login.
Problem with Root 2 (or with my brain)
Never mind, I always type out the full directory when I use commands that delete things, it expects you to be in that directory and just type the command and the file (without its directories). That's the thing about these kinds of challenges, something that might work in real life might not work on the challenge. I understand though, when you're coding something like this, you can't anticipate every exact wording a command might have. Thanks anyways!