Get online support
Hi @sammctackett,
Welcome to the Community!
AP Isolation is disabled by default on the TP-Link vr1600v that we provide. You can confirm it by logging into the modem's interface.
Regards,
Are you getting any error message, @sammctackett?
Can you try to forget the Wi-Fi network and reconnect the devices to the Wi-Fi network? Please make sure that your device is connected to the same Wi-Fi as your Chromecast.