The Country Limitation option is designed for the Merchant to select the countries and regions from which s/he wishes to receive transactions.
This option can be deactivated or activated by following the below steps:
1 – When you're logged-in to your Merchant Account go to: Merchant Services- Service Setup.
2 - Choose "Concerned Service" then go to "View Setting" and click on (Next) for three times subsequently.
3 – Check or uncheck the desired countries from the Payment Setting section.
4 – Click (Finish) when you're done.