For the old newspaper, may I suggest that you take it off of the suggested bedding? Though I'm not a really great exper on hamster health, I was told that old newspaper can cause sickness in the lungs due to the ink.
I hoped that helped!

Hi there,

Thats the reason why i put there not advice, unless you really do not have to time to replace the bedding and it smells really bad, then it is better to use newspaper for the time being, so the hamster will not get wet tail, as it is deadly as well :)