Error Log shows
2019-05-29 8:15:56 - App Warning: AbanteCart core v.1.2.15 PayPal Express Checkout Error: Receiving country does not support the transaction currency.. Test mode = 0. in /home/bushtrad/public_html/sales/extensions/default_pp_express/storefront/controller/responses/extension/default_pp_express.php on line 272
Does this shed light on the problem?
Dave