I think my sprouts were too small, they were definitely smaller than the ones pictured in the recipe I used. My guess is that I should have used a lower temperature with the size of the sprouts.Sounds like the cooking time was off and/or your sprouts were too small. Did you shake them and check them during cooking? I wonder if the size and brand of the air fryers varies. J know it shouldn't, but...
How disappointing that must have been.