Notifications not working

We are not getting notifications sent to our inbox when someone submits a form.

This was working last night, it is suddenly not working. Nothing has changed on our end, and a second form I have going to the same email address is working fine for now. 

Please advise, as we are also missing a few submissions.

Please advise ASAP - if this isn't resolved I'll need to switch to a different form builder.

Thanks.

Our apologies. We had a temporary issue with email notifications a while ago but it should be working normally by now. Our developers have managed to fix them. All queued emails have been sent out!

Kindly check. Thanks!