Like others stated...here are some things to look at

are the hides the same..
temps...
are they low enough...(I just updated some hides with litter boxes. We cut a hole in the litter box and turned upside down...I soon found out I had to cut it down to make it not so tall)

Are they dark ...make sure they are not clear


Mine typically only go in the warm hide when they are shedding or after they eat.