Lessons Learned Offline on iOS Do Not Sync.
Lessons that I have learned while out of wifi/data zones aren't syncing when I get back online. For instance, I completed four lessons in my French tree while on my way home, yet when I got home only two had been completed. Last week, I completed two and it showed I had done none. Why is that?
I am using an iPhone 5 with iOS 8.1 and the DuoLingo app at version 4.1.2.