To check status of any payment on Elite PG, the merchant needs to run Order Status api with own system ORDER_ID.
curl --request POST \
--url {api_base_url}/status \
--header 'Content-Type: application/json' \
--header 'order-source: rest-api' \
--header 'x-client-id: <App ID>' \
--header 'x-client-secret: <Secret Key>' \
--data '{
"order_id": "order_1626945143520"
}'