Don't worry about the starting of a new topic
I've searched the database using your username, email, and IP address that you've used in your guest posting, and you're still not in the system.
I will set you up an account and activate it manually using the username and email you've used above. I will then email a password to you on the email you've used so that you may complete your profile and, most importantly, change your password to one of your preference.