The issues with device control from the mobile app and automations, as well as devices being incorrectly marked offline, have been resolved. Please contact us via support.smartthings.com if you have any questions.
Oct 19, 11:21 EDT
Beginning around 9:56am EDT, some users in the Americas, European, and Asia Pacific regions may currently be experiencing issues with device latency when controlling devices via the app or automations, and may see devices marked offline incorrectly. We are currently investigating and will provide updates as available.
Oct 19, 10:58 EDT