Please check ""Obtain Items"" for any cards you may have used to obtain Flairs, and also verify whether you have traded cards with others.
Keep in mind that the number of grand total cards acquired may differ from your current total due to the above reasons.
■ How to check Flairs:
Go to My Cards (second button from the left at the bottom of the screen) > Tap a card that has flair > See the button at the top-left part of the screen.
■ How to check Trade History:
Go to Social Hub (middle button at the bottom of the screen) > Trade > History