you have to use ti before the match starts - write it in matchcomments and say it to your opponent - additionally as written above - email the supervisor!
normally yes, but its up to the opponents if the match hasnt started because a player hasnt been able to make it. See np in saying ok, lets be fair and reschedule the match for another time.
we no play today sory!!!
no palyers....
2morow mabY?
/p