Last night around 5:27 PM PT, we experienced an outage that impacted US users ability to log in to the SmartThings mobile apps and control devices. These issues intermittently persisted until 9:16 PM PT, at which time the root cause of the outage was addressed, and users were able to control devices and access the SmartThings apps.
Issues persisted for a small subset of those users, specifically related to installing and editing automations until 8:09 AM PT this morning. As of 8:09 AM PT, all US operations are performing as expected and we continue to closely monitor our systems.
If you have any questions, please reach out to us at https://support.smartthings.com