i have tried EVERYTHING! plz help!

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I am using Buffalo WHR-G54S router. I CAN online, on wii24, browse the weather,news,voting,shopping channel but not online gaming!:mad5: It will just stuck on connecting screen for hours & hours without even showing a single error code.
I have even portforward these port :
28910, 29900, 29901, 29920, 80, and 443
Games i had tried:
pokemon revolution
mario strikers

 

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update:
problem solved:lol:
solution : add my login username & password on the proxy server section. without adding it only let me surf the web.