Anyone who has ever integrated third-party modules into a website understands your frustration with a clunky API. We struggled ourselves with one provider whose documentation was written in a way that was impossible to understand. When we switched providers, our main requirement was seamless integration through a single gateway. The software from EdgeLabs
https://www.edgelabs.game/ worked perfectly for us. Our IT team managed to get it working perfectly in a matter of days, with no problems at all. They have great documentation, and their support team are swift and responsive if there are specific questions on the API. Everything is smoothly embedded into a single window, even the customers don't notice a thing! How much traffic do you currently have flowing through?