I think Henrik means “top-level Anki process” when referring to the root process. If restarting your computer did not help, it may be worth trying to run Anki from a terminal. Assuming it’s in your /Applications folder, please open Terminal.app and run
/Applications/Anki.app/Contents/MacOS/AnkiMac
If you’re not on the latest version, AnkiMac might be Anki.
When you do that, what text is printed?