RBR20 router won't connect to the internet.

The Orbi router that my family has been using for a while has suddenly quit working. I've tried the old "unplug, wait 30 seconds and plug back in," I tried rebooting it from the mobile app, and finally pressed the reset button on the back of the router. All attempts were unsuccessful. The main problem is that it comes back on and connects to all the devices, but it won't connect to the internet. When it powers back on, the LED light will blink white quickly, then slowly, then it just stays on.