A 'Draw No Bet' market does not include the draw option.
You can only select either Team A or Team B to win and if the match ends in a draw after 90 minutes (plus any medical stoppages) then all bets on the market will be void and stakes will be refunded.
If you have used cash out during the match, these bets will also be void if there is a draw. This means that you will not receive the cash out profit or loss and your original stake will be returned.