Your pairing code expires if you wait too long. Close the Rumble app on your TV and reopen it to generate a fresh code.​ Check your login status at rumble.com/pair. The pairing page needs you logged into your Rumble account before entering codes.​ Verify both devices connect to the same Wi-Fi network when casting. Mismatched networks prevent communication between your phone and TV. https://rumblecompair.com/