Why have completed forms stopped coming to my email?

For the last few months, since about April, completed forms have stopped coming through to my email and I need to check the site to find out who's completed my form. This is causing delays in my information being processed as I don't check the site as often as I do my email. Is there a way to fix this, or a setting I need to change?

I have checked the email log for your email address and I can see there are failed emails, here is a screenshot of that: 

This happens when an email address is in our bounce list, I have checked yours and I cannot find it there, I'm not sure if you did remove the email. 

I have also tested one of your forms and I can see the email was successfully sent: 

What I noticed when checking your forms was missing info such as sender name in the email settings, please do note that some email providers do not receive emails with missing info, when the email is not properly delivered the email address is added to our bounce list. 

Please follow the steps on this guide in order to properly set up your emails and avoid bouncing: How-to-Prevent-Email-Bouncing-Related-Issues

Hope this helps.