Recovery heart rate

Guys, has anyone seen the recovery heart rate window after stopping a workout? I can't understand why I don't see him. The class is stopped, I stand motionless for several minutes, nothing happens. I can save or delete an activity. In the required column the readings are 0
Some write that you need to immediately click save training, Others write not to save anything, but just wait...

I can’t figure out how to do it correctly on our model.