Sorry for the radio silence. We are aware of the issues that appeared over the weekend but it took us whole Monday to determine what was the issue
1. A patch is incoming!
2. If you experienced issues with the shelter building (upgrades being reverted, rooms changed, etc.) please load your save from early Monday/Thursday (depending on your time zone) or earlier. The issue was caused by loading a save file from the (now reverted) version 1.0.24 on to the previews working version 1.0.23. We are deeply sorry if you have lost your weekend progress. The earlier saves will work with the current Steam version and the incoming patch
EDIT: Issues should have been resolved View game page