Nothing works for me as far as upgrade stations. Waste the time unlocking them, but once I enter them, nothing happens. I am able to rotate the camera, but no stat increases, as another user said, if anything, it makes it all slower. For example, the healing station, if I sit inside it between waves, I can go from maybe 24 to 43 HP. Walking around cutting wood or simply standing still I heal to 100. Game is just unfun in its current build. trying to cut down trees and dodge crap is a nightmare of a chore, I may add. Made worse by upgrades that simply do not work or take so damned long for any increase it is a 'why bother'.
For those who want to know about actual gameplay: You run around as a chick who the game says 'is always naked' but is not naked at all. You have an insanely slow-spinning axe rotating around you to chop trees. Meaning you are trying to use WASD or arrow keys to drunkenly move around trees that take three hits each to get 1 wood. For the purpose of unlocking upgrade stations that are SUPPOSED TO improve stats and progress, but in truth are so slow to increase stats they are useless, or they slow things down rather than improving them. Meanwhile, you get bombarded with waves of enemies, further slowing down the dreadfully slow farming of lumber process as you run in circles drunkenly more, this time to kill the giant spiders that appear to be the sole inhabitants of this forest you are in. I use the term 'forest' because the game calls it that. In truth, it is not dense enough in trees to be one as trees are so spread out that you'll seldom hit more than 2 at a time in your circle of range.
Everything about this game is a lie or horribly set up. Not nude. Not really an upgrade. No reason to progress, if there IS progression. Descriptions from what the dev say here and what are in game are different (for example, the bench says it increases healing, making it sound as if sitting in it makes you heal faster, not that it increases your HOT (Healing over Time) rate when NOT in the bench.
This is like one of those games you'd find on Switch rated M but aren't more than T for teen outside of a couple AI generated art images.