I've read somewhere that just buying and listing a few silvers players everyday will work and should unlock after 3-5 days, I'm trying it now to see if it works, but I don't think there is a current method that people know.

Last year it was 10 full games and it would unlock 1-2 days after.

I Had a message telling me that i need to continue playing fifa 17 to unlock the transfer market etc on the webapp all i had to do was go on the full game list a few players and then reload my webapp and i had it unlocked then but it helped me the fact i had the full game 2 days before it was even released in America and i'm from the UK so i got it 4 days before