Stop v2ray-core (press Turn v2ray-core Off, the display screen changes to Turn v2ray-core On), and press to exit, uninstall V2rayU.app


Open the terminal and copy and paste the command sentence line by line. Press the Enter key after each paste.
cd ~/Library/LaunchAgents//bin/launchctl remove yanue.v2rayu.v2ray-core/bin/launchctl remove yanue.v2rayu.httprm -f ~/Library/LaunchAgents/yanue.v2rayu.v2ray-core.plistrm -f ~/Library/Preferences/net.yanue.V2rayU.plistrm -f ~/Library/Logs/V2rayU.logrm -fr ~/.V2rayU/

To reinstall V2rayU, please go to MAC installation tutorial