sudo xattr -r -c /applications/geometry\ dash.app
Press . You’ll be prompted for your Mac’s password. Note: The cursor will not move while typing the password – this is normal.
Lucas closed the terminal. He navigated to the Applications folder and hovered over the cube icon. The cursor didn't turn into a "no entry" sign. It stayed an arrow, eager and ready.
A few seconds passed, and the command completed without any error messages. John decided to relaunch Geometry Dash to see if the problem was resolved.