If you aren't receiving new order email notifications this could be due to the email address not being entered in the setting. To check your company details, follow the below steps.
Click on Administration tab.
Click on Company Details tab.
Scroll to Order Settings.
Enter the email address in the box for New Order Email with Attachment field.
Scroll to the bottom and click Save.
📌 Note: If you have Manage Depots setup, you need to check the same settings as above refer to article Update or add a Depot