If you want to delete the Facebook integration, please login to your Facebook account and select the small triangle in the blue navigation bar located in the top right-hand corner, where you can also see the option to log out.
Please select "Options/Settings" and continue with choosing "Apps" on the left side. Now you can select the Readly app and delete/remove this integration by clicking on the small X.
Now you have to create a new Readly password. Please go to the following page:
Click on "Reset Your Password" and enter your e-mail address. You will then receive an e-mail to create a new password.