Disabling it solved the problem. But I also want to use the remote management. I cannot understand why they forced the 80 port to be redirected to remote management.

@terziyski There is only option for https port.

I tried to forward the 80 port for my server. However, the 80 port is continuously redirected to the router login page. I of course added my server to port forwarding section. I also changed remote...