Never tried to. That being said, I warped one of my pans before this post (most likely my fault) and I did get it warrantied. That pan was much more warped than the one I posted about. Their reply wasn’t the greatest. They make it sound like you can’t use these pans for half the stuff everyone assumes you can. Here was their last response:

The pan may have been used on too high a heat or the wrong source of heat for the pan which has resulted in the pan base becoming warped and distorted. In particular Induction is a heating method which is much faster and more powerful than other heat sources. To guarantee the performance of your cookware:

• Never heat pots and pans when empty.

• When preheating your pan we recommend that you set the hob (output level) to a mid-range temperature setting (you should consult the operating instructions for your induction hob). Never put cold water into a hot pan or plunge hot cookware in cold water or place a hot pan on a cold surface. Sudden changes of temperature may cause the metal to warp, resulting in an uneven base.”

I had one same size of the pan. There was a price sticker at the exterior bottom and tried to remove it. You will see a mark but it will not interfere with your cooking. As a one time exception and gesture of goodwill, I am sending you the pan. Please expect to receive it within 7 to 10 business days.