Tsew

I think you have to assign your dupe to the massage table everytime. In fact it allows them to relax 1 time then the massage table is available with no dupe assigned to it. So I suggest you to assign a dupe when his stress is riching 50-60%. So you would probably only require 1 massage table at the beginning of the game then when the number of dupes, you have increase this number according to the population

Same for me. If you know how to solve this issue don't hesitate,