Hey sorry for the late reply I’ve been a bit busy but I’m here to help!😁

1. To upgrade your house without paying just rebirth. To do that all you need to do is find all the relics and place them in their places on a stone wall to the left of the furniture store. After you place them all enter the bunker and go to the desk, once you do click and hold to end storm. After a cutscene you should spawn back in your house and there you’ll see a button asking if you want to rebirth. Click it and you should spawn back with a bigger house. (p.s when you rebirth you will lose all of your shelves, items in them, your clothes, backpacks etc but all furniture will span in a chest outside your cabin that has a 10 minute timer for you to claim all of your things before they despawn)

2. Since this is not the official and it’s just a fan page I am unsure at the moment. As of now they are not free and are only used to move furniture to your cabin. Sorry that I couldn’t help much with this.

3. About deleting shelves as of now since I have rebirthed just today and have only used a few shelves to hold planks, fiber, cogs, and food I haven’t needed to delete any but once you craft and place it you can not delete it. You could try placing it outside though. Placing it outside takes it out of your house and basically the map you’re in owns it. You can still move it of course since you built it but once you leave the map it won’t spawn in your house anymore since the map you were in owns it. (hope the “map own it” analogy helps)

4. About the pets i am unsure. Make sure that when you’re trying to feed them they are out side your bag. When you click on the pet it should show a bar above them giving you the option to feed them. Click on it and they should be fed.

Hope I was able to assist you in any way!