after tour my corr and live boards have inlarged and become blurry even log in page cutting out some wording, i still can play.

Playing in the tournament should have no connection to the size of the boards or your screen.
 
It sounds like maybe the screen resolution on your monitor got changed? You might try a higher screen resolution like 1024x768 pixels. This can be done in the Settings-Control Panel-Display area of Windows.