Submission Review Guidelines:

• I have followed the WooCommerce Contributing Guidelines and the WordPress Coding Standards.
• I have checked to ensure there aren't other open Pull Requests for the same update/change.
• I have reviewed my code for security best practices.
• Following the above guidelines will result in quick merges and clear and detailed feedback when appropriate.

Changes proposed in this Pull Request:

Checking the _paypal_status before sending a request to capture the payment to avoid duplicate capture requests (the 2nd request fails anyway but it may set the order status as failed wrongly)

How to test the changes in this Pull Request:

Ensure that the payment capture is functioning properly.

1. You will need a Business sandbox account (merchant) and a Personal sandbox account (shopper).
2. Set the deprecated PayPal gateway feature flag, and set the Orders v2 migration flag:

wp option patch update woocommerce_paypal_settings _should_load 'yes'
wp option patch update woocommerce_paypal_settings use_orders_v2 'yes'

3. Go to WooCommerce > Settings > Payments > and enable PayPal Standard.
4. Configure PayPal Standard's setting:

• For PayPal email, enter your merchant sandbox account email.
• Check Enable PayPal sandbox
• Check Enable logging (optional, for logging)
• For Payment action, select Capture

5. To enable end-to-end testing, add the PayPal API client and secret (used by the feature branch's test proxy):

wp option update wc_paypal_api_client_id <YOUR-PAYPAL-CLIENT>
wp option update wc_paypal_api_client_secret <YOUR-PAYPAL-CLIENT-SECRET>

6. As a shopper, add a product to cart and go to checkout.
7. You should see PayPal as a payment option.
8. Click "Proceed to PayPal".
9. Use your Personal sandbox account credentials to log in and approve the purchase.
10. You should get redirected to the "Order Confirmation" page.
11. Wait a few seconds, and go to the wp-admin order page.
12. There should be an order note about payment capture.
13. The order's status should be "Processing". (or "Completed" for digital products )
14. In the order details section, the transaction ID should be linked.
15. Click the transaction ID. It should take you to the PayPal transaction page.

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