I've been having the strangest problem where Facebook pictures and Instagram posts will not load when im connected to wifi. I have an iPhone 6 and my girlfriend has a 5S and we're both experiencing the same issue. It's not a constant problem, kind of comes and goes. I've reinstalled the app, restarted my phone, restored my router and nothing seems to fix the problem.
Any ideas as to what may be happening? Thanks for any help.