C & S Products Easy Fill Deluxe Snak/Suet Feeder with Roof and Platform

How do you insert the suet cakes? From top or bottom?

Does this feeder fit the 2lb seed cake, or only the smaller Suet Cakes?

Does this fit the 2.8 x 9.5 x 8 inches ; 1.4 pounds seed cake?

How large are the wire openings? I prefer no larger than 1 1/2 inches. I plan to put mealworms in it for the bluebirds.