After my first biofeedback session my "Save" button was disabled. Why?

This indicates that the biofeedback was performed in “emulation” mode. This mode is enabled whenever Spooky Pulse is not detected by Spooky. Go into the Advanced Menu and view the connected devices. You should see Spooky Pulse listed before your generators. If not, you may need to check your Spooky Pulse cables and restart Spooky.