Im looking or Kewai-dou Items on http://kewai-dou.com but they seem to be not working can any one post links to the stuff if its still available somewhere?
I have listed the items below

Demon Wings
http://kewai-dou.com/devils-accessory-set/

Suzu Hair
http://kewai-dou.com/suzu-hair-for-the-sims3/

I have checked the links, they are working. However they are Adfly links so you may have to disable Adblocker. If the page redirects and you can't download, just press the back button on your browser and skip the ad again, it should work.

And just to add to what flowr already stated, is it possible that you have an Adf.ly skipper?

If I have such a module enabled, I can't access the downloads (403 forbidden error), but if I disable it, then I can get the downloads. It seems that Kewai-dou decided to have the direct download links behind adf.ly and doesn't allow for direct linking which might be why you can't access the downloads...

So one possible solution: you could disable your adf.ly skipper until you get your items (you can keep your adblocker if you want).