Great, but downloaded items keep disappearing

The app is great, I love downloading the workouts and being able to use whenever & wherever I like but its so stupid they disappear and you have to redownload every 14 days. What happens when you have no connection? Thats the whole purpose of this app for me, to use when I dont have wifi.

Chrishann24 about BODi by Beachbody, v1.1