JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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 have tested your form and I was able to submit it. When I submitted your form I got redirected to your thank you page.
After that I have checked our email log and my submission like all others was sent successfully to email address firstname.lastname@example.org which is set as recipient email address inside of your email Notification settings.
You can also check the email logs for yourself on this link:
Also I have checked and your Email address is not oi bounce list.
Please check spam, trash and bulk folders and if you find them there please mark them as not spam in order to not go into the folder any more.
To avoid it happening in future I would suggest checking this guide: Whitelisting JotMails IP Addresses
Hope this will help. Let us know if you need further assistance.