I am following this as I am having a similar issue. I know I had port forwarding work at my other house, but cannot make it work since we moved. I have checked and it says the port is open. I used what is my IP to find what my router IP uses. When I try using that IP address I continually get an error message that I cannot connect. I am feeling dumb here as I know I made it work previously. I have tried this on my Laptop with Windows 10 and also on my Samsung S7 and neither will letme log in unless I use wifi or the local LAN. I know it is not nearly as hard as I am making it, but if anyone has any ideas I would certainly appreciate the help.
Thanks in advance