[CLIENT], The league client consider Idon't accept the game

I started to search a game with my friend, a game procked, I accepted it, but it's consider no and that make me go out of the file. I don't know how that append, but I can describe the situation :

1. A friend invite me on a ranked game, on flex, we were only two.
2. My friend had 20min of waiting, and we wate 20min.
3. We found a game, we accept it and go on the draft.
4. A man dodged the game so we were back on the file.
5. 5 seconds after we found a game we accept it, but someone don't. But my screen show me the timer of the founding.
6. When i was blocked on the screen, an other game procked on the screen of my friend but not on mine. So I can't accept it and that make us leave.
7. So we have to wait 20 min again.

Thank you for reading, I hope this going to be corrected, And sorry for my English.