Use the below configuration to get an email notification each time a form is submitted.
Step 1: Go to the Forms tab
Step 2: Click on the 'wrench' icon (you will see a pop-up like this)
Step 3: Click on the ‘Edit’ icon
Step 4: Change ‘Enable Notification’ to ‘Yes’, enter the user group who should get the notifications and click 'Update' button
Note: The individual user names are not shown in the 'Notification Recipient' dropdown. Even if users type their name/email address in the notification recipient box, and update, the notification recipient reverts to blank.