Trouble integrating - sample code?

I am having trouble integrating. I keep getting a message in test mode that says snipcart cannot find the product.

I am making a single page website that just sells one product - though I have custom fields for the product that need to be sent to checkout.

What is the simplest way to integrate things? I am not planning on adding more products. Other than that I like the way Snipcart looks and functions.

Hello, why don’t you share what you have so far?