How were your printer and TV connected before, ethernet or WiFi? Were they connecting directly to your modem/gateway? Which model modem do you have?
They were connected by wifi before with no issues. I don't have the exact model of the modem but I think it's a dual one, both 2.4GHz and 5GHz wifi. I saw where I need to get xfinity to split the combined network into 2 separate networks. How do I go about getting that done?