CM2000 and MoCA support

I have a CM2000 modem and Google Nest Router.  Have been loosing TV service with Xfinity lately and they are saying that the Modem is not MoCA enabled.  Is this modem MoCA cetrified and how can I check to see is MoCa is on and MoCA controller is off?  Please advise so that I can determine if the ISP has recently changed something or if it is a modem issue.  TV Service was working for the last 5 months.