I think it's no longer relevant. Whatever the betting history say, whether OP did or did nothing wrong, Coins.game's representative are not coming back to this forum to address the issue [hopefully they will, in the months to come, but not within this short future], this case will never be resolved here.
I just read their ANN thread. We should stay far away from these guys.
For the time being, yes, the best approach will be to stay away from them, given they decided to leave this forum [albeit hopefully only temporarily], which means the forum can't reach them and can't do much to protect the players and "pressure" them to solve cases against them.