hello, so sorry about this! we have had a few users who have been unable to open the itch mac version, so we pulled it from the store for now. right now, we are offering steam keys to mac users who bought the game on itch while we search for the solution. there have been no issues with the steam mac build so far!
please let me know if you'd like a key, or if you'd prefer a refund and again sorry for the inconvenience <3