We're aware of datacenter region SFO2 having connectivity issues, and are working with our 3rd party provider to ensure this is resolved in a timely manner.
UPDATE: The networking team has identified an issue with networking in our SFO1 and SFO2 regions that is currently causing Droplet connectivity issues and event processing errors. We will post an update as additional information is available.
FINAL UPDATE: We have received word that connectivity has been restored to all servers in the affected region. Please reach out if you experience any issues going forward.