Hulk Contact Form Builder

We've had a great experience for a while with Hulk Forms but recently we keep having days where submissions aren't sent to our email so that we aren't aware that our customers are communicating with us. We've let Hulk Forms know about this issue in the past and they've told us they're working on the issue. However too much time has elapsed on our end to really justify the risk of missing submissions to stick with them since the issue persists.