I want to use this payment gateway http://www.paymentez.com.ec/inicio especially designed for payments in Ecuador, I contacted them and they told me that it can be done by an API integration? Is this possible? How? I really dont want to migrate my site to Woocommerce :(
Dallas here, from the Shopify Social Care Team.
Unfortunately, Paymentez is not a payment gateway that is compatible with Shopify at the moment. However, we are working hard to increase the number of gateways available in each country to make capturing payments easier for merchants.
Although, that one is not available this list here gives all of the payment options that are available to you, in Ecuador.
I hope this helps you find a suitable gateway and if you have any other questions at all please don't hesitate to let me know.