Hi!
First, thanks for buying our game :D

For the icon thing, we added the eye icon to let you know it's dark or when there's light. Why? We saw that some people playing our game (youtube/twitch) didn't use the flashlight sometimes. It's a useful tool to use, not only to see better in the dark, but also because interactors (icon to open drawers, cabinets, etc) are less visible when you're in the dark. So it's kind of a way to remind you that you might need the flashlight/open the lights if you don't want to miss anything. Not everyone needs this notification though, but it doesn't take that much room on the screen, so why not :P

For the crafting, it usually requires you to press combine when you have all required items, so I guess some items were missing. Or if you didn't install the latest update, maybe you see question marks. These also mean that you don't have all the required items. Either way, as soon as you do have everything you need, it's easy to use ;)

Hope I answered your question, and don't hesitate if there's anything!
Cheers!