If it helps, there's some kind of major service outage going on; I first noticed I couldn't connect to some sites a few hours ago (around 8 AM ET). For example, Tumblr is down for me, Twitter is down, Wikipedia is down, a lot of gaming news sites I was trying to read are down, all with the "connection time-out" error. People were also reporting issues with Discord, but I didn't have any problems.
If you go to downdetector.com's main page, where they show current services reporting heavy disruptions, Elder Scrolls Online was listed when I checked about an hour ago. It's not showing on the main page now (but a lot of other services are popping up there as part of the disruption). On Down Detector's ESO page it says User reports indicate possible problems at The Elder Scrolls Online, and the chart is showing a huge spike in connection problems reported since 8 AM ET.