"Maybe they don't eat our candy."

[DeniBeeZ]

Why doesn't "Forse loro non mangiano la notra caramella" correct? Candy was caramella so far not caramelle...

[nprovenz]

is 'forse loro non mangiano la nostra caramelle' correct also?

[f.formica]

You'd have to use the singular "caramella", and even then it would raise questions as to how more than one person is going to eat a single candy :) Note that caramella is only used for the stricter sense of small sugar candy, not the broader sense of sweets.