WiFi router blinking orange and white, loss of internet connection.

It started a few days ago, my WiFi router would lose internet, and then the modems top right light would flash orange, and then start flashing white, and repeat the cycle for at least an hour. And then the WiFi would come back on later in the day. Only to happen ahain the next day. I try to identify the issue on the app but it says it doesn’t know and recommends i have one of their people come out.