DEPNotify 1.1.6 won't install during prestage enrollment

When I setup DEPNotify 1.1.6 to install during prestage enrollment, it never installs. It doesn't matter what version of macOS the Mac is running. It also does not matter if it's Apple Silicon or Intel. The package never runs. I even created a new package by running the install package on a test Mac, and then I used Composer to create the new package. 1.1.6 will install from a policy with an enrollment trigger. 1.1.5 will install during prestage. I have ran this over and over again on both Mac VMs, and on a new M1 MacBook Air.