Is my Syrian stressed

[LaurensHaven]

Hi. I really need some help. I have a 20 month old female Syrian. She is living in a living world eco habitat large. So she has about 1100 square inches of floor space. She also has about 20 cm of substrate possibly a bit more. She has tunnels, chews and hideouts. I scatter feed and make cardboard chews to hide treats in. She also comes out every day although only for short amount of time as she then starts digging up the carpet. Despite all of this she still seems to be stressed. She keeps trying to climb up the wall in one corner and chew the cardboard attached to the side of the cage. I am at a total loss as to what to do now. I’ve tried everything and it’s killing me that she might be unhappy. This is the biggest cage I could find bar a diy which is just not possible as I wouldn’t know where to start. Please help me. Is she stressed or bored? Or does she just like chewing something that has a bit of resistance so she can really sink her teeth in. Thank you.