Third-party payment methods (KwikCheckout app) not appearing in Checkout Sheet Kit

[MTaran-89]

What area is the issue related to?

Checkout Sheet Kit

What version of the package are you using?

Checkout Sheet Kit v: 3.5.3, Buy SDK Version: 2025-04, Samsung Android v: 16

Reproducible sample code

Hi team,

We are encountering an issue with the Checkout Sheet Kit where third-party payment methods provided via a Shopify app are not appearing in the checkout.

The merchant is using the Kwik app, which enables additional payment options (e.g., alternative payment providers) on the checkout page.

Steps to Reproduce

1.	Install and configure the KwikCheckout app on a Shopify store
2.	Enable additional payment methods via the app
3.	Open checkout in a mobile browser → payment methods are displayed correctly
4.	Open the same checkout using Checkout Sheet Kit 
5.	Navigate to the payment step

Expected Behavior

• All active payment methods (including those provided by KwikCheckout) should be displayed
• Payment options visible on web checkout should be consistent with Checkout Sheet Kit

Actual Behavior

• Payment methods provided via KwikCheckout are not displayed in Checkout Sheet Kit
• Only display GoKwik cash on delivery

Screenshots/Videos/Log output

Storefront domain

9bs51i-50.myshopify.com

[github-actions]

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