OK - I just completed the flashcards for lesson 1.2. First, I noticed I was not awarded the 25 points for completing the flashcard set. Then when I returned to the main page, it still says I have 19 phrases to do as if I had done nothing. So, it seems that occasionally the flashcard system has a hard time determining if a flash card set has been completed.
more on the flashcard glitch

Robert-C7
January 30, 2016

Rocket-Languages
February 1, 2016
Hi Robert,
Thank you for contacting us. Our apologies for any inconvenience caused. We believe we have corrected this issue with the Flashcards now, but if you continue to have trouble, please don't hesitate to let us know.
Thank you for contacting us. Our apologies for any inconvenience caused. We believe we have corrected this issue with the Flashcards now, but if you continue to have trouble, please don't hesitate to let us know.

Robert-C7
February 1, 2016
I just worked through the 1.0 flashcards, another set where I observed this behavior, and this time it worked. I got the 25 points and it now shows itself complete. So, things are working.