Diagnosis
This is an app connectivity glitch. The eero cloud service cannot reach your gateway to check its status, but your local network is running.
How to Fix It
Force quit the eero app on your phone. Turn your phone's WiFi off and on. Reopen the app. If the error persists, restart your gateway eero by unplugging it for 10 seconds and plugging it back in. Wait 2 minutes for it to come fully online, then check the app.
If That Didn't Work
The problem is on eero's server side. Check eero's official status page on Twitter (@eerosupport) or their website. If they report an outage, you wait. There is no local fix for a cloud outage.
Heads Up
Your network will keep working locally during these app errors. Only remote access and some advanced features like ad blocking will be affected until the cloud connection restores.