Not user friendly – Cards On The Go: foreign language words memorization app with offline dictionaries Review

I'm trying to learn Russian and bought a Russian card deck. However the app will only display the cards that came with it, which are English to German. I can't figure out how to load the right cards and can find no instructions on how to do so.
Review by CharlieW1980 on Cards On The Go: foreign language words memorization app with offline dictionaries.