I recently encountered an issue with Apple Pay while attempting to make purchases on online clothing stores, particularly when trying to buy items like T-shirts Space jelly . After checking and ensuring that my Apple Pay settings were accurate in the device preferences, I realized that the problem might be related to the online store's compatibility. It's crucial to use a browser that supports Apple Pay, and Safari is often the most reliable for this purpose. Additionally, it's essential to confirm that the specific online store supports Apple Pay as a payment option. If the issue persists, reaching out to both Apple and the customer support of the online store is advisable. Keeping device software up to date and considering alternative payment methods are also valuable strategies in overcoming such challenges.