Oh, one more thing I see in your html source code that is incorrect.
Remove this tag from your form:
<input name="recipient" type="hidden" id="recipient" value="email@yourdomain.com">
Did you read my tutorial (
http://www.lunarforums.com/forum/index.php?topic=18221.0) carefully?

Because in that tutorial, I instruct NOT to put your email addy inside that tag in your html

(it's a vulnerability and subjects you to spam harvesting).
Anyway, if you go back and go through the instructions carefully and thoroughly to make sure that you have accomplished all that is noted there, your issue will most probably be resolved.
If you still have problems after that, however, post back here and I will try to help you further.