DIAGNOSIS: You're likely overcrowding the basket. The Duo Crisp's air fryer relies on hot air circulation. Piling food in blocks airflow, steaming the food instead of crisping it.
FIX: Cook in smaller batches. Use a single layer of food with space between items. Shake the basket or turn items halfway through the cook time. Preheat the air fryer lid for 3-5 minutes before adding food.
IF THAT DIDN'T WORK: Pat your food completely dry before air frying—surface moisture is the enemy of crispness. For frozen foods, add 1-2 minutes to the cook time and shake well.
HEADS UP: The included recipe book times are starting points. All air fryers vary. Always visually check for crispness a few minutes before the timer ends. It's easier to add time than fix overcooked food.