The site has been having some troubles with email for the past week or so. If you registered a new account you likely noticed your validation email never arrived, stopping you from having permission to download or post. This issue has been fixed and validation and notification emails have resumed going at normally.
New accounts created in the past 14 days that were pending validation but unable to validate due to the email not coming; have been all manually validated and should now be functioning as proper forum members able to post and download. If your account was pending validation 14+ days ago, you will need to re-register your account.