I will check again following your post and then reply you once finish. Is there may be the issue with the access point as that one is very old ? thank you

By this I can't even login to sub router if keep port of 80 or 8090. means to say port 80 or related i can't login to sub router even.

@terziyski I am very thank ful for all your assistance and I have did all as per your guidance. Remaining only one issue which is: WR940N (Main TP-Link) 192.168.100.254 WR940N (Sub Router)...

@terziyski Dear I want to add some thing which is in the same network. I have attached an AP to a router and being on the same ISP router I want to access its interface. When I am inside i can access...

At Last! After a long time I did. Thank you very much. I will spread this solution as much I can... 🌹❤️

I have a question and searched too much could not find any solution. I describe my scenario : Assume I am connected with ISP Modem, from LAN port of archer I connect to TP-Link MAIN router's WAN,...