Looks like it can be a game hen/lavender americauna mix. Others may know better. I’ve honestly never heard of game hens laying blue unless it’s a cross of some sort
I use the same one and have no issues with it. Initially use the highest setting and keep it low so that they barely have any head clearance. The chicks will huddle and share body heat if they need to. With time raise the plate and lower the setting. Chicks are pretty resilient especially right...