This issue has been resolved. The instance with an issue has been removed and will be investigated in detail.
Posted Jul 23, 2021 - 09:37 BST
Monitoring
Some authentication types have been unable to login on some servers this morning. This has been resolved and we are inspecting other instances to ensure this is an isolated incident.
Posted Jul 23, 2021 - 09:22 BST
Identified
The issue has been identified and a fix is being implemented.