I am set up to receive notifications but as of 7/28 they have stopped coming through

I would like to apologize for the for the inconvenience this have caused you. However, may I just ask you these questions so we can better assist you: 

Does this happen to all of the forms on your account or just specific forms? Can you provide us the form(s), please?

Also, can you provide us the email address that should receive notification once your form is submitted?

Have you tested it? 

On your end, you can try to check these guides, follow the instructions as needed, and see if it solves the issue. 

How-to-properly-Change-and-Test-a-New-Email-Recipient-Address-

How-to-setup-email-alerts-to-prevent-email-bouncing-related-issues

How-to-remove-your-email-address-from-bounce-list

Whitelisting-JotMails-IP-Addresses

How-to-view-all-your-form-Email-History

If any of these guides still doesn't solve the issue you're having, please feel free to get back to us with the details being asked on this post and we will be glad to help you. Thank you.