If "The Levelator" is not working on your new Mac, you can try a few things to troubleshoot the issue. First, make sure you have the latest version of the program installed. If not, update it to the newest version. Additionally, check if there are any compatibility issues with the new Mac's operating system. You can also try restarting your Mac and then opening the program again. If the problem persists, you may need to contact the developer of "The Levelator" for further assistance or look for alternatives that are compatible with your new Mac.