Sorry for the long read.
So it was originally thought that you could only use 1 account her console, when you try to load up your second it tells you you have to wait until full release DESPITE having EA access on that separate account. There was a work around tweeted yesterday that worked for me, although it didn't go down the way he explained it but I'll share anyways. I'll share my sequence of events so if that tweet doesn't work maybe something I did triggered something.
TO SPECIFY, YOU CANT USE MORE THAN 10 HOURS ON ONE ACCOUNT, ITS 10 HOURS PER ACCOUNT.
First after loading up my main account on the trial and adding some points, i quit out the game, logged out of that account and logged into my side account.
I went to EA access on that account (I already had my 1 month activated) and tried to load up FIFA 17 and it errored out and told me to check the store for when full release.
So I get on my computer to follow the instructions on the tweet below, couldn't remember my email for this account (as I have about 5 accounts) so I loaded up FIFA 16 on that spare account to look at my team name to match up with one of the web app teams I had loaded up in my browser.
Got the email, logged in, only when I logged into the browser and went to Link below, the "Try For Free" was grayed out and I couldn't click.
So I went back to my console, closed out of FIFA 16, and closed EA access, I then loaded my EA access back up again (I'm still on my spare account), clicked FIFA 17 and Play and it loaded up the game and said play trial and I was in.
After an hour I logged out and loaded up my main account to double check to see if it took time off that one and it didn't.
So somehow I got it to work for me. Idk what exactly in all that triggered it but you guys are more than welcome to try.
on my twitch channel, same name as here, my most recent stream you can see me going back and forth between accounts.
The tweet is below.