Hello Loki64,
Thank you for your patience. Our tech team has just fixed the issue reported for flashcard decks. Please try the flashcards again. Note that while we were able to restore the majority of the bad cards, there were a few that we were unable to. We are very sorry for this inconvenience.
If you find any technical issues regarding the flashcards, please let us know at
Thank you again.
Sincerely,
Jaehwi
Product manager of JapanesePod101.com