I cannot use the soccer price predictor on certain matches

Only certain games are supported by the predictor within Soccer Mystic. This is because the amount of activity in some of the markets is insufficient to produce accurate data for the predictor.

To find games that are supported go to 'File'...'Add markets'. Select the 'Search Soccer Fixtures' tab and make sure there is a tick in the box marked 'Show only the matches supported by Price Predictor' then click the search button.