Why my free minutes/data/SMS is not displayed correctly in today plugin item?

It's because the rate plan has not been updated to balance information. Do following to update the balance information:

1. Start LCMinutes to change your free minutes for evening (or for weekend, long distance), and save the rate plan setting;
2. Back to main window of LCMinutes, choose NO when prompted to question that whether you want to apply this changed rate plan to past calls and SMS;
3. Quit LCMinutes and check the today display.