Express Checkout Button wont work after installing Shopify Subscription App

Topic summary

A user is experiencing technical issues with their Shopify store’s checkout buttons after installing a subscription app.

Problem:

  • Express Checkout Button stopped functioning following the subscription app installation
  • The “Buy Now” button (dynamic) is also not working

Current Status:

  • Issue remains unresolved
  • No solutions or responses have been provided yet
  • The problem affects multiple checkout options, suggesting a potential conflict between the subscription app and the store’s checkout functionality
Summarized with AI on November 12. AI used: claude-sonnet-4-5-20250929.

Express Checkout Button wont work after installing Shopify Subscription App

My Store is https://b36a24-2.myshopify.com

Update - the Buy Now button (non-dynamic) does not work either