You can't change the ip to your internet IP if you are using a router. It must be the ip of your computer. You have to connect via that ip and everyone else has to connect via internet ip.
Also, since we can not be sure that you are not still using a NonSteam server, locking this due to No Steam = No Support
I do not browse the forums regularly anymore. If you need me for anything (asking questions or anything else), then PM me (be descriptive in your PM, message containing only a link to a thread will be ignored).