Apply tv lost remote and new wifi

HI

I have a second gen Apple TV device which i’ve not used for a while but would like to start using again.

Two challenges to overcome :

• I lost the remote
• I have changed WI-FI / router since last use of the TV device

Progress so far :

• Connected the TV device to Ethernet
• When connected to Ethernet was able to use both my Apple Watch and my iPhone as a remote. Great
• I would like to have the tv device connected to Wi-Fi not Ethernet. And here my problem starts
• Specifically when connected to the Ethernet cable, the only setting in the network menu is related to the Ethernet.
• when i remove the Ethernet cable the use of either the Apply Watch or my iPhone as a remote stops.
• Therefore, i can’t navigate any menus to see if the network menu allow me to connect to a Wi-Fi network.

Any ideas most welcome :)

Kind regards

Paul