You mean web app right? Mine today can access.
I'm not sure what I did but I sold one player, not sure because of that or just EA fixing my problem.
Another EA forum-er suggest to play >30 games (which is ridiculous). I only play for < 15 games now so I think his theory is wrong

Gaurav Sep 27, 2017 09:09:14 PM : Thank you Paul for sharing the details, nice to meet you here.
Gaurav Sep 27, 2017 09:09:25 PM : So, what issue you are facing with the transfer market?
you Sep 27, 2017 09:09:45 PM : you're smart
you Sep 27, 2017 09:10:11 PM : I've spent hours and games in my ps4, but i still cant access transfer market on the web app

you Sep 27, 2017 09:13:14 PM : Any reason why I'm still being locked from the web app?
Gaurav Sep 27, 2017 09:14:22 PM : As an avid sports fan myself, not to mention a self-confessed FIFA game-addict, I absolutely know how frustrating it might be. I
have just checked with my team and got to know that many of our players are experiencing the issue.
you Sep 27, 2017 09:15:11 PM : Can Gaurav resolve the issue?
Gaurav Sep 27, 2017 09:15:35 PM : I do realize the frustration of some of the players who are unable to use Transfer Market, while others are able to do so. This
may be happening because of immense requests being sent to server for logging into Transfer Market or some of our players
have started playing FUT recently, and only played a few matches. They may need to play a few more matches to access the
Transfer Market once their new club syncs fully with the servers.
Gaurav Sep 27, 2017 09:16:24 PM : I doubt, Gaurav might not be able to resolve this issue as of now.
Gaurav Sep 27, 2017 09:17:58 PM : I again want to make sure that we leave no stone unturned on this and hope to see you in Transfer Market very soon. Though I
would really want to, however, it might not be possible to provide an official time frame as I want to provide a completely
transparent service to you. Meanwhile, I would need your co-operation and admire your patience.
you Sep 27, 2017 09:18:37 PM : conclusion = I have to play more games ?
Gaurav Sep 27, 2017 09:20:10 PM : You can play any mode in the FUT and it would be unlocked for sure.
you Sep 27, 2017 09:20:46 PM : thanks for your lengthy explaination
Gaurav Sep 27, 2017 09:21:49 PM : You're most welcome Paul. I appreciate your understanding and patience. I explained it because you deserves an explanation.
This EA really know how to BS to much, plus i also waited nearly 1 hour in the live chat queue