Gateway Wireless Network is Intermittent Daily

I have done this many times. I either reboot within the Xfinity app or unplug the power cable from the back of the unit. Both resolve the issue, but it is a temporary fix as it continues to occur.

@user_zxp3df Thank you for confirming what troubleshooting you've already attempted. I'd like to get a look at the signals on our end and go into a little more in depth troubleshooting. Please send us a DM to Xfinity Support with your full name and address to get started.

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As you are typing a drop-down list appears. Select "Xfinity Support" from that list.
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Was thinking about this, wanted to see if there was a fix first. I haven't been able to navigate through the Support system to a place where I can order a replacement Gateway. The Assistant AI tries to get me to troubleshoot first. There is nothing to troubleshoot when this is occurring because the internet service is still online.

The Gateway model is the XB3. 

Distance to the Gateway has no impact. I can be right next to it in my living room and the issue persists.

I only have one SSID, yes, and when the Gateway wireless network goes down, the SSID will either disappear or remain visible, but unable to connect.

I don't have any network scanning device other than connecting within my devices.

No Xfinity pirated channels.

No preceding event. It seems to typically happen in the afternoon/evening, but it has happened outside that timeframe before. It also doesn't seem to matter what I'm doing (streaming video, music, browsing, etc.)