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I checked the page you included on your post http://www.printingms.net/ but failed to find any forms embedded there.
Since you never mentioned which form you're having issues with, along with the email address in question, I checked your Account's Email History instead and this is what I found:
Related guide: How-to-View-All-Your-Form-Email-History
That submission was for this form https://form.jotform.com/53310621098146
I also tried my luck with all the forms you have (3 forms in total) and all of them have this email address as the recipient email@example.com
That email address looks good and is NOT on our Bounce List. If you could get back to us with a bit more info (like, the exact Form URL/ID you're having issues with, the email address where you're not receiving messages, and so on) then we can better assist you.
On the other hand, if we misunderstood your question and you're having an entirely different issue, just get back to us with a bit more info and a clearer description of what your issue is about.