Ok.. I have a similar problem on mine. Basically, with the new TER, there is a menu with the local boards that pop up when you hover the mouse over the discussion boards tab. My phone browser doesn't support that feature, so I cannot directly access the regional boards. If this is the same problem you are having, then I kind of found a way around it. I got to the My TER tab, and then My Message Boards, then click on one of my posts on the board I want to go to, and from the message itself I click on Back to Forum.

Not very practical, but kind of works.