The below commands can be user for login and logout in a browser. Note that while the browser is not closed, the user will stay logged in.
https://hreda.esac.esa.int/hreda-sl-tap/login
Once done, the login will remain in the browser for the following queries until a logout is perform.
Once you are logged in....
https://hreda.esac.esa.int/hreda-sl-tap/logout
User stops to access restricted data after the logout, and stops to be able to download any data.