The status page is hosted on AWS Cloudfront, right? It sure looks like Cloudfront was overwhelmed by the traffic spike, which is a bit concerning. Hope we'll see a post from their side.
CloudFront has quotas[0] and they likely just hit those quota limits. To request higher quotas requires a service ticket. If they have access logs enabled in CloudFront they could see what the exact error was.
And since it seems this is hosted by Atlassian, this would be up to Atlassian.
And since it seems this is hosted by Atlassian, this would be up to Atlassian.
[0] https://docs.aws.amazon.com/AmazonCloudFront/latest/Develope...