Failed connection of Ring and Eufy cameras after switching to XB8 Gateway

A couple of months ago, I switched to the XB8 Gateway because Xfinity kept pushing me to upgrade. At first, my 3 outdoor cameras (Ring doorbell and two Eufy cameras) worked fine, but a week ago, they all suddenly disconnected. I tried troubleshooting—including splitting the 2.4 GHz and 5 GHz bands to connect the cameras to 2.4 GHz—but nothing worked. Honestly, Xfinity's service is poor, but it is sad that I have no other good options in this area. If anyone (human not AI-agent) from Xfinity sees this and can help with my issue, please reach out.