I'm not sure what you mean by PKM.
The issue is not to do with yellow card accumulation, that works correctly, the issue was in the actual match, when a second yellow wasn't shown, only the red, and there was another issue where the code of conduct suggested the fine for a straight red rather than a second yellow. Unfortunately I clicked through the code of conduct screen before realising the suggested fine was incorrect but I have uploaded the save game and you can go into the match highlights for the most recent match and see that a second yellow was not shown.