I want my phone to show Facebook photos on the lock screen but it just shows a blue screen with the Facebook logo. It used to work so I don't know what has changed. How can I get it working again?
no to all that. settings-> lock screen-> set background to Facebook photos or something else. the end
This can happen when Facebook is moved to the SD card. I just moved it back to phone memory and the problem was solved.
I had the same problem after Denim-upgrade. I have Lumia 820 with memory card & had transferred my Facebook there. I uninstalled it and downloaded it back to my phone memory. That solved the problem.