I can't register games on Bioware Social Network :{

(English is not my native language, sorry for any grammatical errors).

Hi. I have this problem with Dragon Age 2 and Mass Effect 2. Games are Xbox 360 versions (bought in EU, Poland). Upon trying to enter my UPC code (located on the back of the game box) I get the error "Code is not valid for game".

I tried many times and finally contacted an EA Chat Agent. He told me to register these games on Origin so that registration on BSN will not be needed. However I can't register these games on Oriigin, the keys don't work. Is this even possible with Xbox 360 games? (I don't play on PC for a long time). I've already searched the forums looking for answer but didn't find any.

This is strange, I can see DA 2 and ME 2 on my list of games on BSN, even my game characters are there. But I can't register games anyway. I don't have this problem with Dragon Age: Origins and Mass Effect 3. Is there any way to register these games if codes are not working?

Thanks for any help.