This is what it looks like in my router settings ^. Using "localhost" or my IPv4 I can join the server, but using my external IP I cannot join it, nor can my friends. My external IP is dynamic so I use https://www.noip.com/
and I've also set up a static internal IP.
In the guide it says to open the port 25565 in the firewall so I created 2 new inbound port entries in the Windows Firewall options (one for TCP and one for UDP) with port number 25565 and allowed both public and private connections on them.
But still, using https://www.yougetsignal.com/tools/open-ports/ it seems that my port still hasn't been forwarded. Please help.
I've added my PC to the DHCP List and I've turned off my firewall completely, but I still can't connect to my mc server through my external ip, nor is my port opened when I use a port checker to check so.