Strict firewalls or endpoint protection tools sometimes block the local loopback communication port used by WinAutomation to talk to Chrome. Add an exception for WinAutomation in your antivirus settings. Symptom: The Extension Disappears After Closing Chrome

Do not try to use "Chrome emulators" or "WebDriver" replacements. The official WinAutomation Chrome extension is the only supported method for the "Web Recorder" and "Browser Automation" actions.