Downstream light keeps blinnking

Hi everyone.

I found out my internnet wasn't working when I got home, and then I received an alert from my internet provider, Xfinity, said that they had an outage, so I assumed that was the case. Few hours later, Xfinity notified me the problem has been dealt with, but still my internet didn't work after several attempts to restart the modem. The Xfinity webpage said that it could not find my Modem/Router.

The Downstream light keeps flashing green, the Upstream and Internet are off, Ethernet is amber. 

So what is the problem here? I want to figure out if it was the product failure or something else.

Thanks!