Find among your friends somebody who still have an old OSX on his computer (I made this trick with an old Macbook Air using Mavericks), and install it also on this computer.
Download Ozone 4 installers on Legacy Products page of iZotope.- Install them on your Mac (even if it's a recent OSX). If you own an Ozone license, here is the steps: I brainstormed how to solve this problem and I finally figured out how to fix it (the problem was the following alert message 'Can't get core function pointer'). There is quite a lot of interest around this post on Instagram and a lot of people, including me, are wondering how to get Ozone 4 on a recent OSX. Six days ago, famous sound engineer Jaycen Joshua shared on Instagram his 'secret' Ozone 4 preset described by him as a 'cheat code' (find the HD screenshot on his IG) :)