[LunaTheHamster1]

Maybe it's the type of cage, he was kept in a very enclosed space before, he might just need time to get used to bar type, more open cages. Or maybe he will just be better in a tank style cage, I'm guessing you don't have a bigger one to try him in. See how it goes, I think time will only tell.

Also, he may just be taking a bit longer to get used to his new surroundings. I noticed with Comet when I moved him into the zoozone whilst deep cleaning the marrakesh he was very unsettled for quite a few days, maybe a week or so and he is always so suspicious of anything new in his cage.