AR750S EXT Repeater setup fails

Goal: provide a wifi connection to my VideoDisk player by repeating my 5g wifi to the LAN connection on the video player.

On boot with no internet cables connected, I can do the initial setup and log in. On the internet screen, clicking the Repeater button per the online instructions does not take me to the Repeater panel to set it up.

I’ve done resets and reboots. The undocumented Mode switch is set to the left which I presume is “off”.

What am I missing?

Thanks! --Jack

Issue resolved. Now have another issue.

Very insightful - thanks for you input!