No longer receiving emails

I am no longer receiving email notifications when someone registers for my event. It worked fine for several months and suddenly this week I am not receiving any. The Jotform app is working fine on my fine and I am receiving notifications there. However, no emails are being sent to me notifying me of registrants. 

This is a duplicate thread. I can see here that my colleague Welvin already replied to you. Please refer to this thread: http://www.jotform.com/answers/771354

Thank you.