The plugin actually checks how many bets you've done in the last 24 hours (current time minus 24 hours) and then kills and displays the error at the same time. Simply put, the plugin doesn't have time to count it as 1 game as that comes well after it kills the script. You've just bet more than 8 times in the last 24 hours...
Edit: A count of how many games you've played in the last 24 hours could be useful...