You have to accept the computer seeks (light green dots in the graph on the right).
how to play live chess against the computer??

yeah I heard something like that before. But in the one and a half year i'm here on this site, i've never seen those dots! And I know that you can turn off computer seeks. But I never did that...

Well look in settings and filter.
But the seeks will be on 5 minutes, just over 15 and just under 3.

thanks for the fast anwsers. apparently there was something wrong with the rating range of the seeks i got :) but tthanks to your help I knew it had to be something i did wrong in my settings!
I've been wondering that too and when I saw someone do that I was like spending a lot of time trying to figure it out but know I know how to di it. So what I did was I went to live chess and when you do that you will see and then look at the right side you will see PLAY, play a friend and then "vs computer" and there you go choose what computer you want to play (you can also search that in the FAQ).
I've seen a lot of people talking about their games against the computer, and i've even seen them. But I just don't know how to actually start a live chess game with the computer..