Market press Settings

Set up Marketpress to only ship to the UK. However, now want to allow payment from Southern Ireland. Added Ireland to the allowed countries but when testing I could select Ireland but then it wouldn't set the Counties drop down and would not allow it to progress.
I managed to get in to remove Ireland but now cannot find the setting.
I go into the shipping setting but only see the Flat rate shipping table and nothing else's .
Can you help or advise.
Ultimately I need to allow Ireland but it didn't work.