Please review the following possibilities.
1) You submitted your inquiry using a form other than the official inquiry form.
2) You entered an incorrect email address.
3) You may not have received a response if you did not enter your email address or chose not to receive a reply from the developer.
4) If the email was classified as junk mail or spam.
5) Your email provider may have restrictions on incoming mail.
6) There may have been technical problems that prevented the email from reaching you properly.