Offline Duolingo doesn't work right
Why when i do the offline duolingo does it not save my progress or only partially saves my progress.
This is extremely frustrating as I fly a lot.
Are you talking about the web site or the apps? AFAIK it does (or should) save your progress in the skills you were working on and it needs to synchronise this when you go back on line. Sometimes you may need to give it a kick, such as logging off and then back on again, or changing your language if you are studying more than one. Then you should see it update your progress. However, I have never tried this so hopefully someone else will have some alternative suggestions.