Do you have this kind of confusion？ When you spend a lot of effort to buy a cat tree, as a result, your cat only likes the carton of cat tree? Let's help you solve this problem.
First, check whether the cat climbing frame is suitable for your cat: Whether the cat climbing frame is comfortable, whether it is placed in the position that the cat likes, whether the size is suitable, whether there is bad smell, whether it is woddly.
Secondly, check whether the cat climbing frame is shared with other cats or dogs. Maybe your cat is shy and don't want to share the cat tree with others.
Finally, you can try to put some things your cat like on the platform of the cat tree, snacks to eat and toys to play with. Or use the stick to guide the cat to the cat tree and let it get used to the it.
https://superjare.com/collections/cat-tree/products/superjare-cat-tree-gray-1