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Last week, I picked few matches I wanted bet on and before I could stake on it, one of the games had already started. My instinct tells me to wager on it like that but I ignored and added another game to make my potential winning a round figure. When the games ended it was the one game I added that spoilt my bet. So I understand the feeling, but if one of your games had lost you won't be saying this, so be happy and thankful that you won something regardless of the amount.
Your narration is exactly what also happen to me before but my own was removing like 3 game which have already started out of my prediction and replaced with 3 other games but in all the 3 I added 2payed together with other games but 1 still cut the game. I was very angry a terrified seing that I lost the game I could have won. And my instincts was telling me to allow the game to continue but I refused but went ahead and added some games.