Here is My Question :
I was using No-Ip For making a Dedicated "Call of Duty 4" server and was Giving No-Ip Free Domain to people who want to play E.g "abc.no-ip.biz" and they have just to put this "connect abc.no-ip.biz" and they were able to connect to my server.
But
Now when they try to connect through No-ip free domain which i created, it doesn't work even if i try to connet through no-ip i cann't connect to my own server then i connect it through localhost
"I have no-ip softare that updates the domain and it works in Browser (it brings up my router settings when i open it) that mean it works but why its not working in gaming.
it was Working Before like 2-3 months ago.
Do you have any idea, that where is the problem. I have tried every possible thing to fix it but failed. I don't Think that i should contact to No-ip because its working in Browser but not in game.
Any help will be Appreciated thanks.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic