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.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
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 notification settings and they appear to be OK with the exception of missing a sender name. This usually doesn't prevent the notifications from sending, however it might be in this case. I added a send name to your notification and sent a test submission. It looks like the notification went through.
Check to see if further notifications come through but they look like they should now be working.