Once someone blocks you, or they deactivated their account. My already shared album and photos I've shared with them, should be deleted! So they cant have access to them after they decide to unblock you. Everytime i open my album and who I've shared it with, the number is always bigger for a moment, than the one that resets too. That definitely shows me that it's shared with more people than what its showing me. And have an option to unshare it with. So a work around, is you put it into the code that if someone blocks an account they loose all album media of the blocked account. This is worrying and you should strive to protect your users. Not enable the predators. Thanks