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I have checked the email address you're using in your form and I can see emails are being sent properly, here is a screenshot of the email that was sent from my test:
I would suggest you to check your spam folder and if you find the emails there, please mark them as not spam.
Here is also a guide that will help you to know why emails may not be sending: Why-I-am-not-Receiving-Email-Notifications
Also, do note that the email notification from the submission will be sent, but the email with the quiz results will not be sent since you've not set it up in the quiz app:
If you would like the quiz results to be emailed as well then you will need to set it up in the quiz app as well.
We are having email issues recently. JotForm emails are falling into spam folders of some of the email providers. Could you please check your email spam box? If JotForm emails are there, could you please select all of them and mark them as not spam.
Thank you very much.