Post deleted. My mistake.
WPS or WDS? They are different.
If you want to set up repeater, can you just use ssid and key? WPS pin should be for easy connection but the router doesn’t have this. Maybe you can use luci but I didn’t try this before.
Sorry, my mistake. I mixed up WDS and WPS. I’ll continue working on getting WDS to work for my Wi-Fi repeater.