Royal Mail Shipping to Ireland Problem

Hi - I am using 2.3.02 and the Royal Mail extension.
Everything is working OK except for customers from Ireland. If you put an Irish address in as your delivery address the following message appears in the Delivery Method section...

Warning: No Shipping options are available. Please contact us for assistance!

Can someone point me in the right direction to correct this issue?

Thanks in advance.

Managed to sort it out. The Royal Mail extension doesn't have the Ireland geocode in the list. So I added it to the list and everything works fine.