It looks like they re-did it a few days ago. I think on Friday I noticed the re-do. I tried logging in, and I wasn't able to. I tried a few times, but it didn't work out. I got nervous about it, but thought I'd give it a day or so, thinking maybe it wasn't all finished yet. A few hours later I tried again, and I logged in without a problem. I've been getting in since then.
My guess is maybe with the transition, maybe they lost a few people along the way? But I did notice when I wasn't able to log in, a box came up, telling you if you had trouble getting in, to email them and let them know. I'd email them, they usually have great customer service.