DIR-878 A1
23.05.2
My settings, however, after being applied, the lan interface is without internet
Lan interface, or lan side clients?
I had the same problem for a day until I figured out what was the source of that in my case and the OpenWrt's " Wi-Fi Extender/Repeater with relayd" guide does not conatin:
At Firewall the "Masquerading" must be enabled on LAN zone - that's not enabled in default.