skinning1

I am Australian, my friend in Serbia has created a modded Minecraft server using portforwarding. I've only had success playing for a little bit, but now I'm having issues trying to join. (1.12.2) I hop in the server, and I'm stuck in a limbo where I can't build or place, frozen in time practically, and then soon after I'm disconnected with the error message "Internal Exception: java.io.IOException: An existing connection was forcibly closed by the remote host". I've uninstalled and reinstalled my Minecraft, java, played with my internet, all multiple times, with no avail. I followed a tutorial that included checking internet settings, I've got no idea what to do.