My CardioGyms stopped working overnight. Does that mean I missed all of last night's sessions?

Not necessarily. If CardioGyms stopped operating at some point during the night, sessions completed before it stopped would generally not be affected, but scheduled sessions after that point may not have run.

Open the NeuroRester app and check last night’s session-by-session operation history to confirm which sessions were completed. Then fully recharge the module, confirm that it can start normally. If the module continues to stop after being fully charged and set up again, please contact NeuroRester Support for further troubleshooting.