Went down 8/29, but the site is still up. If they had no intention of bringing it back, the site itself would have been shuttered by now. No reason to pay to host it and for it's memory bank if there's no intention of fixing it. It's also not listed on their server shut down list and teams can still be downloaded in game, just no one can log into the site.
check out this thread regarding it:
https://forums.operationsports.com/f...post2049569727
Plenty of us have been in contact with EA about it. Every time they have said it is being fixed. I have even flat out asked reps if it is being shut down and was told there has not been any plan to do so. The game no longer has it's own support staff, so fixes come slow. I was told by a rep that it's handled by the Madden team, and since that just came out, it makes sense teambuilder is on the backburner.
The most recent update we received is that it's being moved into their other site content instead of its own standalone site, and that's why it has been down as they sort through the coding to make it happen.
On another note, however, I'd love to see if guys can get into the code for it. Would be a great tool in the meantime or if it ever is shut down for sure.