I received my whoop 5 a week ago. Yesterday at healthspan I saw I need one more sleep to log and I can see what whoop predicts for my whoop age. Today morning I even got an email that Healthspan is now unlocked, I have to head to the Health menu and I can see it.
I am having the same problem as well. In logged 23 or 25 recovery/sleep. This morning the notification shows me that healthspan is unlock. But when I check it still said that I need 21 recovery ??!!??