Im not able to see your screenshot - but one other thing to check. Every router ive done port forwarding on, also requires the PC to be setup with a Static IP address or it wont work. you can check that by going to a command prompt and typing: ipconfig /all
look for something that says: "Dhcp Enabled" it should say 'no'.
Chances are what happened is you had the static IP setup, and somebody changed it back to the default.