I have a Samsung Ace 2 and over the past few weeks I've not been able to send picture messages via the Facebook messenger app. I can receive picture messages with no problem whatsoever. When I try to send the picture, it loads up on my screen normally and appears to send just fine. The other person never receives the picture. If I close the app, then return to the conversation thread, the picture is gone but there is a large coloured box with any text that I sent as well. Any ideas? It's driving me nuts!