Help please

I’m not sure if this is the correct place to ask this question but …
I have a website designed by 1 of members here at the forums…
www.finalapproachinc.com
I think this site is perfect but -----
1 of my pages is the Contact Us page…
The visitors/customers should complete the form and send it to me…
Problem is this is not working. I have a Comcast email addy.
We set up gmail account and it started working all the requests were forwarded without any problems. When we changed to the original addy - nothing - no email ???
Anyone could help me and tell me what should I do and how to fix it??
Regards,
:huh: