for everyone curious about the #Signal situation - there were DNS issues on AWS (with DynamoDB which Signal uses for their AWS deployment being the most severely hit). users whose clients were talking to the GCP server were not affected, hence why the outage was mostly seen in Europe and Asia but not in America.
users have slowly been rerouted to the GCP server, hence why the service came back to different people at different times.
there'll probably be a re-rerouting once the issue resolves.