In order to run ARA2 plug-ins under Logic on Apple silicon Macs, Logic Pro X must run in Rosetta2 compatibility mode.
1. Open the Finder and go to Applications folder.
2. From the Applications folder, select Logic Pro application.
3. Right-click Logic Pro app and select Get Info (or press Cmd + I)
4. Make sure Open using Rosetta is checked:
5. Re-open Logic. It should now indicate it is running as Rosetta:
* To switch back to running Logic native, simply uncheck the Open Using Rosetta.