Gift Box works with PayPal and other payment methods in Shopify Checkout. Once a customer reaches checkout and the free gift is in the cart, they can pay with any enabled method (including Google Pay or PayPal Express).
Not supported: dynamic checkout buttons on product pages
Dynamic/express checkout buttons on product pages (e.g., PayPal Express, Amazon Pay, Shop Pay, Apple Pay, Google Pay) bypass the cart and Gift Box, so the app can’t add or validate the free gift.
Recommendation
Disable express/dynamic checkout buttons on product pages or direct customers to add items to the cart and check out normally to ensure the gift is applied.
Have any questions? Please contact us at [email protected] or use the in-app chat, and our support team will assist you.