We received an order without receiving email notification

Also, we received an order without receiving notification. I only noticed it because I went in to check on the above issue, and noticed something in the inbox. Is this common? Is there a common solution?

You mean to say you have received submissions in your form but no email notification went through to your inbox? I can see that your last edited form have 4 different email recipients. I would suggest to check the spam folder of these recipients or anything that could possibly block/flag the notification coming from Jotform. Perhaps adding Jotform to your email service provider's white list might help. http://www.jotform.com/help/145-Whitelisting-JotMails-IP-Addresses

You can also confirm the status of the notification if it was sent to your email or not by following this guide: http://www.jotform.com/help/293-How-to-view-all-your-form-Email-History. 

This article will also be of help. http://www.jotform.com/help/208-How-to-setup-email-alerts-to-prevent-email-bouncing-related-issues

Let us know should you need any further help. Thanks!