try mobile.redhotpawn.com
if that won't work for you, or you use up your 500 moves, you need to switch the main site to legacy board in your board settings. You may find that your mobile device will work to see the board and not move on it. In that case, you may just want to update your notes while you're on the go, or download the mobile opera browser, which worked for me.
This is all in my experience of using a Windows Mobile 5 Pocket PC