@Joseph-TP Thanks!

@Joseph-TP Thanks for the reply. I don't know the model of router, it was installed by the fiber company and I don't have access right this minute. As I said, I tried and reset many times,...

Hello. Today I changed my main router and network, and I had to reconfigure my RE200 range extender. I also upgraded the firmware (to 1.0.23 Build 230418) thinking it can't hurt, but I think that's...