You need to use article How to remote access the web dashboard - Node Operator to have an access to your dashboard on your phone or PC/Mac.
The other way is to remove 127.0.0.1: from port mapping for the dashboard port. This will allow you to connect to you node via LAN.
However, I would ask you to do not forward port for dashboard on your router, because the dashboard is not protected and you will expose your personal information to the whole internet. If you want to have a remote access outside your network - use the above guide.
The alternative is to use [Tech Preview] Multinode Dashboard Binaries for all your nodes, it doesn’t requires to forward any additional port except standard node port which will be forwarded to make the node work.