As others have reported, videos no longer play. They were working fine one day then the next they were not. There was no app update or anything, so I figure the web API must have changed.
If thats the case, why didnt you coordinate your web API changes with your mobile apps?
I opened a trouble ticket with the website but have not heard a thing yet.
Please fix this! Your app is useless with no video.
Until then, its back to the website...
SugarloafPhoto about Khan Academy