Although I'm years late to this thread, I wanted to make a post for anyone else that has bought this router and trying to connect the Wii to it...
I just recently bought this router and had absolutely 0 problems hooking up my PS4, PS3, Xbox 360 and cell phone to it. I did however run into problems when trying to connect the Wii. I called Nintendo's customer service and although they tried to help (and were very tech savvy) we found no solutions.
Possible solution: The poster above me may have the answer, but in order to do that you kind of have to know what you're doing when it comes to MAC addresses and router security settings. If you feel comfortable messing with those then you should try his method.