You're on the right track with checking your port forwarding settings. Private Port refers to the port on your local network, while Public Port refers to the port visible to the internet. As for the specific ports you should be using, it depends on your setup. Typically, 7 Days to Die uses port 26900 for the game server and port 8080 for the web interface. However, the ports may vary if you use a different setup or hosting provider. You might want to compare hosting plans at https://7d2d.net/compare-hosting-plans to see what works best for you. Best of luck!