CalphalonContemporary Hard-Anodized Aluminum Nonstick Cookware, Square Griddle Pan, 11-inch, Black

Giddle is warped. i have only calaphon pots & pans. this griddle does not seem to be the same quality. the griddle is warping. why?

do eggs stick?

Can you make crepes on this?

Can you cook 4 grilled cheese at once on this pan?