Thanks for your patience and understanding as we worked to investigate and resolve this issue ASAP.
Due to an unexpected influx of new traffic, several servers in the MQTT notification cluster became overwhelmed and started timing out, causing intermittent connection errors. The incident lasted approximately 2.5 hours. We have resolved the issue ASAP and are taking steps to prevent it from reoccurring in the future.
We sincerely apologize for any inconvenience caused by this incident.