Has anyone encountered this issue?

I have tried clearing my cache, using Chrome, IE, Firefox, I don't know what else to try.

Salesforce support tells me to go to trailhead and click on a link (Login issue) but even when I navigate to that page, it re-loads and gives me the same error.

This page isn’t workingtrailhead.salesforce.com is currently unable to handle this request.
HTTP ERROR 500

Every trailhead page I navigate to gives me this error.