I spent the last two days making a deck for an exam Friday morning. I created it on the mobile app (ios). When I synced it to ankiweb, ankiweb only has 10 of the 186 cards, and four of the ten are duplicates of the same card. I tried to just study it on my phone but 90% of the deck shows the back of the card first instead of the front, making it worthless. I tried deleting and resyncing but now I just have no decks on my computer. What can I do to fix this?
You appear to have deleted your cards? If you made those cards on your phone, there’s a chance you can recover them from an automatic backup: https://faqs.ankiweb.net/restoring-an-automatic-backup-recovering-from-data-loss.html