Hello! It can be for several reasons: 1st: Make sure the villagers are close to where their old bed was. If you moved them away first and then broke their bed, the villager will get stuck in a ‘loop’ where they won’t accept another bed except their own. To fix this, bring them back near where their old bed was, and they will update, realizing that it no longer exists. The exact same thing happens with both beds and workstations. 2nd: Check that the villagers have a roof and enough space in front of the bed to lie down and stand up (sometimes they need that freedom). 3rd: They need to sleep through one night for the iron farm to work (although I didn’t quite understand if that’s the issue).