If I remember correctly, I tried to see if I could change my settings but that didn’t work out for me (I probably did it incorrectly, I’m not sure, plus it’s risky so I wouldn’t recommend). Then I decided to download Unarchiver and extract the files. If you check the package contents, you should see Unix executable file in the MacOS file, and you can click on that and a prompt will come up saying “can’t open because developer can’t be verified.” Then you can just go to your security and privacy settings and “open anyway,” and it should be working after.