Not getting email Notifications for Appointment + bookings


I have been using appointment + successfully for the past 6 months

However recently I got a developer to do some code on another area of my website for some other stuff and it has cause me to stop getting email notifications of new bookings

I have checked all the settings and they seem OK, is it possible for code to override this notification setting?

Can someone from the support team please login to my back end and help?