Kindly note that due to players withdrawing, match schedules have been
changed.

The latest match schedule can be found at the following link:
http://www.tournamentsoftware.com/sport/matches.aspx?id=14406&day=114409

Any reason why Kuan Beng Hong withdraw?

Kuan Beng Hong does not withdraw. It is Bao CL and Persson withdrew, I believe.

Why Bao CL withdrew? I guess he's in very bad form right now, as simple as that.