Yeah, I tried my best to get your plugin to work with Divi.. but was struggling with integration issues due to no native shortcodes. Tried event rocket, but had even more problems with that and Divi.
IMO I think Divi is fairly popular, so you might want to put some time into that platform. Not sure what you mean by popular themes, but it seems WPzoom, Elegant Themes, etc, are going the theme builder route.
Thanks anyway.
Mark