To whom it may concern,
Whilst I was revising i realized that the cards in my deck- cardiovascular::histology of blood::granulocytes (and other decks) have gone missing. I remember I spent a lot of time writing out those cards so they should be there. I went to custom study and pressed review ahead or preview new cards on the off chance that they are still there and just need to be reviewed at a later date. However, even when i typed 300 days, an error message appeared saying that no cards matched my criteria.
I would be very grateful if you could help me out and possibly help me to restore those cards or at least help me to prevent this from happening again. Do I maybe have too many cards and this is overloading the system?