What happens when a device goes offline?
A local device may keep a record while the cloud is unavailable; a queued command is not proof that the device performed it.
What should I check before acting?
Check the latest telemetry, the device safety state, the policy available locally and pending sync. If any of these are unknown, stop and ask the operator.
Where are the setup details?
Read the hardware guides for devices, MQTT and offline sync. Read the BCI guides for constrained-input experiments.