Facebook not working?

News feed photos are not loading over WiFi.
I have tried different WiFi(s). Bt it isn't working out.
but on 3G it's working fine.
Please help
 
I bought a note 3 last week. Yesterday after I logged in from my Facebook app, I noticed, some of the images are not loading. Instead of the real image, other images ( alternating images are in the other places of my screen that time) and shaky icons are coming (image attached) . I tried re installing and updating the app, but it didn't solve the problem. I tried restore factory settings as well, but it didn't help either.
Any suggestions???
Screenshots_2014-08-19-16-39-05.jpg