Yes this is the exact problem Im having... For more it been going on since the day I downloaded the rosters and it got to the point where I contacted an EA rep because all the forums are worried about the FUT changes and no one is focusing on this part of the issue.
Issues I have:
1) matchday squads will not activate
2) online matches aren't available because of an "online squad check error"
3) I am unable to download updates due to "Unable to retrieve your EA information" error
4) New teams (OCSC & NYCFC) aren't available after update
Things I have done:
1) Yes I am connected to the internet
2) Yes I am connected to xbox live
3) Yes I am logged into the EA servers
4) Yes I did reset rosters (does not work for actually playing as those teams)
5) Yes I did try to download latest roster from customize team menu
6) yes I did play partial games to get the auto update to kick in and turn matchday on
7) I did delete and re install all game components (did not work)
8) I cleared my Xbox One memory for FIFA 15 and had the Console re-sync with the game (did not work)
9) I have deleted certain files (setting and squads etc) that the FIFA rep told me to to try and redownload and it did not work.
10) I erased my profile from my Xbox One and redownloaded it to try and get FIFA to re-sync as well (did not work)
Conclusion:
Finally called EA Sports as a last resort and came to the conclusion that the issue is on their end 100% and there is nothing we can do if we are affected by these issues at the moment. For me , its the 3rd day in a row that this has been going on, but for others it might have different time frames. The FIFA Rep told me that EA has already fixed and patched everything for FUT (which seems to be the focus BOOO!) and that now they are working on the core aspects of the game. Was also told that all Playstation servers should be recieving the correct patch and online squads as of now and have no more problems but that EA is having problems distributing the patch (and matchday rosters, online squads, etc) to XBOX 360, XBOX ONE, and the PC version of the game. She said the problem with matchday and the online squads is all connected to FUT and the update system, so when FUT is online, everything else should just work. As a side note, I was one the phone with them at about noon today, and that she was unable to give me an ETA when system would be fixed. I was told to check in a day or two. THAT TELLS ME THAT THIS IS A VERY BIG ISSUE AND THEY ARE NOT CLOSE TO FIXING IT, and definitely not today.
Sorry guys, I want to play as bad as everyone else but that's what I have to go on and my trial and errors to try and get this darn game to work.