Don't know why you used italic text for the hole post, But ok, Now this is happening to me as-well. Make sure you have this. Your IPV4 address in the box, Both TCP and UDP on 25565. If it's blocked maybe a firewall is blocking it or some-what. Try searching it on Youtube.
If you have any AntiVirus, try adding MCDzienny.exe and port 25564 to its exceptions, or simply disable the firewall, but I don't recommend that. Also, try adding MCDzienny.exe to your exceptions in your built-in firewall.