We are continuing to investigate the issue. Currently, AWS is reporting an issue on their service dashboard :
> 5:29 AM PDT We are investigating increased error rates and latencies for the EC2 APIs and connectivity issues for some instances in a single Availability Zone in the EU-CENTRAL-1 Region
This issue is currently preventing the recovery of existing instances as well as the launching of new instances. We are continuing to explore workarounds, but the extent of the outage is currently preventing most recovery techniques. As such, we are most likely waiting on AWS to mitigate the extent of the outage before we can complete resolving the issue.