There is no Anniversary (TBC) version yet. You most likely bought the Classic one which is now Classic ERA
The TBC classic version of the website will be re-posted and working next week sometime. We have to get through this Jan 20 pre-patch for retail, then spend a couple days getting TBC set up again. All the optimization code is there, we just have a little bit of back end work to do. This thread has more discussion:
If you did buy the Classic Era version but really wanted TBC, send us an email via our support page (found via the “hamburger” menu at the top-right of our main website/optimizer web page) and we can swap it to the TBC version for you once we get it live next week.
Hello, I sent an email and haven’t received a response yet.
We’ll get to it this week, sorry if we’re a little slower to respond right now – the Midnight pre-patch is tomorrow which is always a couple all-nighters to try and minimize issues with these giant patches.
Then later this week we’ll catch up on customer service and work on getting TBC up and running again.