What exactly isn't working on the site for you now?
Most of the time I'm on the PC (Windows 7, Firefox) Once I figured out where things are and what they are now called, I haven't had any problems. In fact, the pages are loading faster, and I find the Flat Awesome + very clean and easy to read. (I did increase the font size by 10%, because I'm old and my eyes get tired at the end of the day)
I admit there are a few features I miss, like "groups" and the "who's watching this thread" but there are lots of new features I like a lot: customizable alerts, the private conversation format for PMs, and the ability to upload a picture directly.