In fact, the first time I tried, I had previously saved my game inside of Mauville's Pokémon Center. So, when I saw that it didn't work, I returned into my game and saved outside of Mauville City. Again, I tried to get my Wondercard, and again, it didn't work. With nothing left to lose, I decided to create my own Wondercard with the informations of another one — Movie 2014 ダークライ Darkrai. I putted it as repeatable, did the whole thing involving the SD Card and 3DS Web Browser... still didn't work. So, I saved my game outside the Pokémon Center of Fortree City — yes, I moved, thinking the place could be the problem, closed it, closed my N3DS, and wished for a miracle to happen to me! No, seriously, I started my 3DS and went back into my Alpha Sapphire game.
SO HERE'S HOW I GOT IT.
While standing outside of Fortree City, I moved and played a little bit, like 5 or 10 secondes. Then, I went back to the HOME Menu, started the 3DS Web Browser, went on loadcode.projectpokemon.org, it crashed. After that, I went back into my game and entered the Pokémon Center. THERE SHE WAS, STANDING NEXT TO THE COUNTER! And I finally got my Movie 2014 ダークライ Darkrai.
SO, EASILY: TO GET THE WONDERCARDS POKEMONS OR OBJECTS, YOU NEED TO BE PLAYING IN THE GAME WHILE DOING THE PROCESS TO GET IT.
Also, thanks for the avatar compliment :biggrin: