What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
I checked your forms and I can see you are using three email addresses to receive email notifications, only one of them is not receiving emails from your forms, it is : firstname.lastname@example.org
It's in our bounce list, I have removed it and you should be able to receive your emails now, also I would like to share you this guide : http://www.jotform.com/help/208-How-to-setup-email-alerts-to-prevent-email-bouncing-related-issues
And the link to whitelist our IP Addresses as well : http://www.jotform.com/help/145-Whitelisting-JotMails-IP-Addresses
Also, you can check and remove your email addresses from the bounce list, just follow this guide : http://www.jotform.com/help/262-How-to-remove-your-email-address-from-bounce-list
Hope this helps.
Feel free to contact us anytime if you need further assistance, we will be glad to help you.