There are two reasons why this would not happen.
- The wager was not eligible due to the odds requirement
Keep in mind that to meet the play through on an active bonus the odds to have to be -200 or greater (moving towards the positive sign.)
- B) The wager has not yet settled
The wager must be settled as a win or a loss before it meets the play through requirement. This includes all games on a parlay bet as well.