@tszk I ended up configuring it with WPS, and then connected it with the ethernet cable to my provider's modem. It worked! Thanks, anyway. Best

I have used an RE305 extender without any problems for a few years. Originally, I used WPS to connect it to my provider's router. However, I would like to install it now with an ethernet cable...

I had a problem with WPS, and then I discovered that WPS was disabled on my provider's router. I just enabled it and it worked!