When you switch to a new ISP, you can't simply hit the online button and expect it to work. Did you run the MiamiInit program first, and then import its settings into MiamiDx ??
Quick list of steps to follow:
1) Run MiamiInit and follow its instructions.
2) Quit MiamiInit.
3) Run MiamiDx.
4) Import settings from MiamiInit.
5) Try connecting. If it works, then make sure you do a "Save Settings as Default" in MiamiDx.
