Having problem acessing domain on rocket locally

i managed to install rocket chat on ubunto and can access to rocket locally by ip and externally.by domain that i bought and ip…but couldnt access rocket locally by domain and forward me to my irancell modem…
what can i do?does it have setings to define these?

There’s not much anyone can do if you post problems with no error messages or screenshots from your mobile clients (and log messages) Nox Vidmate VLC.