There could be several reasons why your pizzelles aren't achieving the desired crispiness. 1. It's possible that the batter consistency is too thin. 2. The cooking time is insufficient, resulting in a softer texture rather than a crisp finish. Experimenting with adjustments to the batter thickness and cooking duration may help you achieve the crispy pizzelle texture you desire. 3. Humidity can impact the crispiness of your cookies, particularly if you reside in a highly humid climate. 4. Ensure that your cookies are cooled completely on a rack before storing them, as proper cooling is essential for maintaining their desired level of crispness.