I've signed up here just to help with this. I don't have a complete fix, but i have a solution that should enable you to play and load the game up once.
I'm in the UK and i managed to start playing by downloading some software called HideIPVPN, download, install, register on website, sign in to app, and connect to a us server (don't use the openvpn option tho) then start up origin and it will let you play fifa.
The problem is this software only lets you use it for 3 hours. Once the three hours are up fifa goes back to pre-loaded but unavailable to the 28th if you quit the game.
However once you've got fifa working if you leave the game running then you're ok, just never quit until the 28th. (uk release date)
Unlike last year there doesn't seem to be a way of activating fifa. Last year i was able to do the same thing but once it activated i could forget about using the VPN. It seems this year you need the vpn to keep playing if you quit the game.
Screenshot for proof to counter the dick wad below