Preheat your air fryer per the model's instructions to 400 degrees Fahrenheit.
When your air fryer is heated, pull out the air fryer basket and lay your fries in a single layer. It's ok if they overlap slightly. But you don't want the air fryer basket to be crowded. If the basket is too crowded, your fries won't get crispy.
Cook your frozen waffles for 13 minutes on air fryer mode, flipping fries halfway through the cooking time or when your model reminds you.
When the waffles fries are done, remove them from the basket and serve immediately with ketchup or your favorite dipping sauce. Enjoy!
Notes
Depending on the size of your air fryer, you most likely will need to cook your waffle fries in batches.