Help, macropanesthia rhinoceros not growing

1 year and a half ago in ordered 2 giant burrowing cockroaches, one 18 months old, and the other one 6 months old.

They are completely fine but the problem is that they are not growing, i usually give them dried oak leaves and carrots, also they sometimes come out of their burrows, is that normal?

1 year and a half ago in ordered 2 giant burrowing cockroaches, one 18 months old, and the other one 6 months old.

They are completely fine but the problem is that they are not growing, i usually give them dried oak leaves and carrots, also they sometimes come out of their burrows, is that normal?