XB10

I believe I have X-class. I have 1G symmetrical service in south-eastern Boulder County, CO. I have had terrible service since install which has gone unresolved with multiple tech visits. I believe there is some sort of account issue as the equipment shows unregistered in the Xfinity app. However when I talk to support they say it's registered. I have two devices, a black cable modem and a white wifi router, whereas I previously had a single device prior to upgrading to symmetric 1G. My issue is internet over wifi quickly becomes unusable after connecting a device to the wifi router, even though initial performance is great. The only way I function is by hanging a google wifi puck off of the modem and connecting to that. The last tech said everything should improve when the new, single device can replace these two devices. I understand that to be the XB10? They said late summer but I've just called and customer service told me it's not available. I see the other responses to posts here saying it should be with X-class service. I also see the responses saying to direct message support from the icon next to the bell, but there is no such option. See below. Can you assist?