@terziyski Looks like the first paragraph of your post brought me sad news. My WAN address is in the range - 100.64.0.0 - 100.127.255.255. Many thanks. New successes!

Thanks for the detailed answer that copies the help for the router. I studied this help even before I opened the topic on the forum. I did all the operations again, but I still can only change the...

I'm trying to remote control my router using my smartphone's browser. If the smartphone is within the range of the Wi-Fi router, then I have no problems and I can change the router settings. If I...