Memory Pair Game

Hi guys ! I try to make Memory game but there are some bugs here. I’ll be very appreciate to you if you help me to find them. Thanks =)
There is link to my rep in github

Memory - Pair Game" - a card game in which all of the cards are laid face down on a surface and two cards are flipped face up over each turn. The object of the game is to turn over pairs of matching cards. The game ends when the last pair has been picked up.

https://camo.githubusercontent.com/d75ef24aee8bc5991143a064bcb7d88c45be1906/68747470733a2f2f692e696d6775722e636f6d2f645432565139572e676966

So what are the bugs that you need help with??

I made one of these in React https://r1chard5mith.github.io/pairmatch/

It should be works like this

https://camo.githubusercontent.com/d75ef24aee8bc5991143a064bcb7d88c45be1906/68747470733a2f2f692e696d6775722e636f6d2f645432565139572e676966

Yep. I see, Could you please send me link to reposit ?