Le Domaine Padel St-Barth

Shopify opened the payment flow in a secondary window. In the mobile WebViews, that behavior left users on a blank screen rather than continuing the checkout.

I intercepted secondary-window requests from Shopify checkout within Android WebView and WKWebView, then presented the payment flow through an in-app action sheet. This prevented the blank-screen state and allowed checkout to continue without interruption on iOS and Android.

The solution worked at the mobile application layer. The Shopify storefront and backend were not modified.