Please refer below instructions for Donation Widget Configuration on the Cart Page and Product Page for Theme 1.0.
Enable donation widget on the Cart Page
Copy the given Shortcode from the Dashboard and paste it inside the cart-template.liquid.
If your theme doesn’t have a cart-template.liquid file then paste the Shortcode inside the cart.liquid file.
Enable donation widget on the Product Page
Copy the given Shortcode from the Dashboard and paste it inside the product-template.liquid.
If your theme doesn’t have a product-template.liquid file then paste the Shortcode inside the product.liquid file.
Save & view and the widget is configured on Product Page and Cart Page.