I can't update the Notification emails to include 2nd recipient

I added two other email addresses to notifications form but it will not send to them. Only sends to main email when I send test email.

Are you testing your form with "Test Email" button? Please note that "Test Email" button will only send email Notification to email address of your account. To properly test your email Notification, you need to make actual submission. 

Please refer to this guide for more information: How to Properly Add, Change, and Test a New Email Recipient Address

If email Notifications are still not sent to all email addresses when you make actual submission, please provide us ID of your form.

Hope this will help. Let us know if you need further assistance.