WON’T LOGIN

Many of the other reviews reflect the same problem I have. The app will not login at all. I’ve used my email address as well as my FB username and it always says my password is incorrect. I tried using a new password and it still doesn’t work. No idea if this is an OS compatibility issue but it doesn’t seem like it would be. I think the app has some kind of conflict with Facebook. Try something else.

Big Doofus about Messenger For Facebook