When activating either Safe Mode or Ghost Mode, you will be asked to perform a Frontend Test and a Login Test (this action allows you to check website functionality from a preview popup).
If you notice any issues while checking the login page, test the website with a different browser or from private mode. This way, you will double-check that you can log in to your website after the paths are changed.
Do not log out of your website before you finish the test. If you click on the No, Abort button on the Frontend Test panel, the plugin will load your website’s previous working paths.
When you confirm the Login Test by pressing the Yes, It’s Working button, the plugin will download a file with the new login path and the SAFE URL (it’s very important that you save the URL). The SAFE URL will also be available on the WP Ghost Dashboard > Connected Sites section.
This way, you will be able to access the safe URL and log in when there is a compatibility issue with other active plugins.
Also read: How to Disable WP Ghost In Case Of an Error.