Depending on your club's rules you may be entitled to a walk-over if your opponent fails to attend or arrange your match. If this is the case you can "win" the match by marking it as a walk-over in your favour.
To do this locate the match in My matches and press the Score button as if you were going to score the match. Instead of setting the score press the white W-O button at the bottom of the scoring panel.
When you do this the match will be marked as a win to you and, if the match is part of a draw, you will be put forward to the next round.