Facebook's thousands of employees are reportedly unable to use the company's internal iOS apps after it was caught running a data-gathering research app that violated Apple's developer policies. Apple said on Wednesday that it had revoked Facebook's certificates giving it access to a special enterprise program that companies can use to distribute internal apps and tools outside the public App Store. The move has caused internal Facebook apps to stop working, creating a chaotic situation that the company has deemed a critical problem, The Verge reported. Facebook employees reportedly can't open company apps for transportation and the lunch menu, along with beta versions of Facebook apps like Messenger and Instagram.