Dystopian sci-fi story about a collapse of civilization, and the survivors trying to use and repurpose the tech around them but are unable to fix the tractor they found to pull rubble because only authorized people from the company with digital keys could repair it, or make a mesh network to communicate but the abundant IoT hubs are bricks without connection to their servers.
Other side of this story, those reenactors in like a colonial village that make their own candles, a civilization collapse is their time to shine, go around helping communities.