What exactly doesn't work? Does the Joomla default Contact form work? If it doesn't, then there is definitely something wrong with your mail settings.
In that case, go to Joomla's Global Configuration (Server settings, I believe) and try the other email Mailer options. For example, if you currently have it set to PHP Mail Function, then try setting it to Sendmail. Then test the form. If it still doesn't work after that, then go back to the Mailer options and try the SMTP setting, then test the form, etc.
If that doesn't work, please contact Support (
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) with your PayPal Transaction number for your subscription and we'll be happy to help investigate it further.
Terry