I'm very sorry. I posted the same thing four times. If you're reading this, I'd appreciate it if you could ignore the three posts.

Thank you for your reply. The purchase button displays Japanese yen, dollars, or euros based on the country information of the user's App Store account. When testing using the sandbox, you are required to sign in to your sandbox account after pressing the purchase button, so the purchase button display does not reflect the currency information of the sandbox account. I would like to sign in with my sandbox account in advance and check the currency display on the purchase button.

Thank you for your reply. The purchase button displays Japanese yen, dollars, or euros based on the country information of the user's App Store account. When testing using the sandbox, you are required to sign in to your sandbox account after pressing the purchase button, so the purchase button display does not reflect the currency information of the sandbox account. I would like to sign in with my sandbox account in advance and check the currency display on the purchase button.

Thank you for your reply. The purchase button displays Japanese yen, dollars, or euros based on the country information of the user's App Store account. When testing using the sandbox, you are required to sign in to your sandbox account after pressing the purchase button, so the purchase button display does not reflect the currency information of the sandbox account. I would like to sign in with my sandbox account in advance and check the currency display on the purchase button.

Thank you for your reply. The purchase button displays Japanese yen, dollars, or euros based on the country information of the user's App Store account. When testing using the sandbox, you are required to sign in to your sandbox account after pressing the purchase button, so the purchase button display does not reflect the currency information of the sandbox account. I would like to sign in with my sandbox account in advance and check the currency display on the purchase button.