During neuro login, the user clicks "Login via GitHub" in browser. If the user was not granted access to neuromation platform, they will see the following error page:

Failed to create a user: {"error":"user \"ajuszkowski\" already exists"}

So now the user realizes that they needed to login via Google account instead, so they run neuro logout (which cleans local auth information), and then they run again neuro login, but the browser already stores cookies for staging-neuromation.auth0.com and automatically logs the user in back to GitHub account. So the only workaround is to clean cookies and neuro login again.