My internet went down several times today and Xfinity Assistant repeats the SAME solution of restarting the modem.

My internet went down several times today and Xfinity Assistant repeats the SAME solution of restarting the modem. After restarting, it worked for few minutes and connection is lost again. Now the connection is completely gone. There is a message "Channel(s), Legacy TV, On Demand impaired" in by Xfinity App BUT this does NOT indicate outage with internet connection. I don't use Channel(s), Legacy TV or On Demand services. THE INTERNET is DOWN.