A couple nights ago, our Ecobee suddenly lost internet access.  We noticed at the same time one of our laptops, some Amazon smart devices and some smart bulbs were having the same issue.

When I go into the Deco app and use the Wi-Fi Assistant's diagnostics, it fails under the Internet Speed saying "You're offline.  Check your internet connections, get back online, and retest your speed."

Weirdly, everything else is fine on our network.  We can get to the internet on other PC's, phones and no other smart devices are having issues.

Any ideas?