Topic: Smash bros 118-0515 error

So i tryed playing an online match but every time i get the error 118-0515 "Unable to connect to partner's device" i portforwaded my wii u and its same thing is happening

http://www.nintendo.com/consumer/wfc/en_na/ds/results.jsp?err... did you try this?

thanks,but when i click to enable UPnP it doesn't do anything it just refreshes the page but its stil disabled

Please help i tryed so many times but the freaking button doesn't work it just says disabled.And i want to play online i searched everywhere but i can't find anything

Sounds very much like a firewall thing.

i tryed to disable firewall but everything is the same

i fixed it i needed to restart my router

But when i went to go play online it said the same thing i followed nintendo's guide but everything is the same.Please help im so angry because i wanted so much to play online

So the problem was the dmz i fixed it and it worked,but now its happening again.What the hell is going on