Multiple card will be needed gateway for 3ds and ds titles, super card dstwo for ds and gba. Remember to play 3ds titles the highest firmware your 3ds can be on is 4.5.
I ordered mine just under a week ago and used ship from UK and it still hasn't arrived. Someone also from the UK I read it took a week to arrive. I would wait another week if your in Portugal, you could try emailing them also.