I recently bought galaxy s2 off my friend, and I cannot log into the Facebook app. Everytime I try to log in it says Facebook authentication failed. When I try to log into facebook through the internet app, it says access denied and it has a long message about verifying my age and that the app is unsuitable for under 15s. I looked everywhere but there is no place where I can set my age. I tried to delete and install the app again but nothing works...any suggestions how to fix it?