This is just about 100% restored.
You can get status here.
I would guess yes- that specific URL is on the domain that is down for us. We havent gotten that exact message, but I would say its the same.
Some people have reported it working again. If I can get anyone from IT to experience this I'll ask them to inspect the cert and see if its updated. Those take a while to propagate and might explain why some people are back online and some arent.