You needed to post your win before time ran out for the Round. Send me a screenshot of the game and chat by clicking on "Send Feedback" button below.
Rule 2 states:
POST OR YOU’RE TOAST – If neither player is reported as the winner by the posted deadline, then both players are instantly eliminated. There is no excuse for failing to report a winner on time. Even if the games remain incomplete, one player must log in and post a winner in order to prevent automatic double elimination. Obviously, it is best if both players agree, in advance, as to the criteria (e.g., highest scorer, current leader, faster player) for determining which player should advance in the incomplete round.