Losing a game during the ranked wins boost means that the booster will have to play extra games. For example, if you buy 10 wins and the booster loses 2 games, he will have 12 wins and 2 defeats overall by the time he has finished ranked win boost on your account. For instances at 0 LP, if you demote we will only be responsible for the net games purchased. If you do not demote you get an additional win at 0 LP.