There is no way to collect from the house or update it, I don't know id there is a bug. Also, building a log pile does not work either. good idea though. I never seen an idle game with "real" game type graphics. I think there should be a jam about idle games in Unreal and that has to be rendered as 3D or 3rd/1st person.
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Hello! The NPC houses are only meant to display information about the AI, I thought it would be a cooler idea than having a menu for that. About the Log Pile, Its my first time doing any sort of building system and I struggled quite a bit with it, but you should be able to place it if you try moving it further away using "Y" and "H" keys on your keyboard. Sometimes it doesnt place because it thinks its overlapping the player, so sorry for any inconvenience that may have caused.
Also, Thanks so much for playing my game, it really means a lot!