Engine Prime not starting on Mac

Hi, I’m having issues with Engine Prime 1.2.3 not starting up on a MacBook Pro (Retina, 15-inch, Mid 2015) running Mojave 10.14.4. I used an uninstaller to remove Engine Prime and reinstall, to no avail. Anyone else have the same issue?

Im guessing its because the software is made for 10.11 , 10.12 and 13 but not 14. Ive not updated my Macbook yet to 14 just incase of that issue.