Unable to select target country in the shopify dynamic remarketing pixel app

AdNabu picks up the target country from the shopping feed in your Merchant Center.

The system picks up the target countries from the shopping feed in your Merchant Center. In case you do not have a live and approved feed, you will not be able to set up the remarketing pixel. We require the feed for Google to verify the product data sent by the pixel. In case you have a live product feed in the Merchant Center, kindly go to the merchant center dashboard and initiate a sync.