Tough luck and you have unfortunately been punked by those Malay. Either the problem is caused by the software written for different television systems (PAL vs NTSC) or regional locking of the Wii. Hacking the Wii is not always safe, therefor the wises thing to do is to sell it on sites like eBay. Getting money back and buy the European version
I still say the safest option is just to get freeloader.. i checked ebay and theres not much you can do with the price and no one really sells them there either.. its like $51 with like 21 bids lolol..... but you can try other sites like http://www.ozmodchips.com/wii-freeloader-by-datel-makes-wii-region-free-pal-p-127.html
Region Locked, you got punked big time, you need Asian version of Wii to play that Wii Fit disc. Ways of overcoming that, mod it or you can get the Twilight Hack, which all you need is NL (Europe) copy of Twilight Princess and a SD card, install Homebrew Channel and another wii homebrew software to bypass wii region code lock. Wii Menu Loader is a nice little hack xD http://wiibrew.org/wiki/Menu_Loader