Resolved
The incident has been resolved.
Monitoring
Engineers have restored the service to normal and are currently monitoring to ensure the issue is resolved.
Update
Engineers have seen conditions improve and continue to work to ensure the issue is resolved.
Update
Engineers are continuing to work on a fix to resolve the issue.
Issue
Engineers have confirmed that some customers are receiving "Metrics Item could not be retrieved" when tuning to a 24hrs timeframe. We are working on shipping a fix as soon as possible.
Investigating
Engineers are investigating potential issues with the Application Metrics within the Heroku Dashboard.