If you wish to disconnect your Facebook account from moincoins, start with adding your email address (if there is none) and changing the password in the settings of your moincoins user account. This is a necessary step that should be completed prior to unlinking, otherwise, you may lose access to your cash back account. If you wish to fully delete your moincoins account, ignore this recommendation.
Once this is done, you can proceed with going to your Facebook profile and navigating through the Settings & Privacy > Settings > to Apps and Websites page. Here find moincoins and on the right side of the table click "View and edit", then a pop-up will appear, where you should scroll down and on the very bottom press the grey button "remove". Facebook will ask you if you're sure you want to proceed with this action, and if you are, then all you need to do is click the blue button "remove" again.
Check out our privacy policy for more information on how we process your personal data.