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Finally got this working on an M2 chip. The steps are:

  1. First run the pkg installer. It will run the installer and appear to succeed but won't create the Application.
  2. Obtain the Application from an intel Mac and copy it into the Applications folder (maybe screen connect staff can help with this if you don't have an intel Mac, or alternatively it might be possible to extract it from the pkg directly)
  3. Run the Application. It will ask to install Rosetta (if you haven't already got it installed)
  4. The application and permissions should now work as per a standard intel Mac installation.

From the above the primary problem appears to be the installer not working on M2. It still requires Rosetta but at least it works