greghacke said Has anyone successfully set up Mingle with Elementor? From what I can tell, Mingle isn’t compatible as the template is missing a number of base WP requirements (content space, etc.)
jeffw said Mingle is a very old theme. It was its 8th birthday on Monday just past. So it was developed in those halcyon days when page builder plugins didn’t exist. Because of the way Mingle works I doubt very much if it will be compatible with any page builder plugin.