the secondary delivery address is not valid, how to do it?
I'm sorry to hear that your secondary delivery address is not valid. Let's resolve this together. Here's what you can do:

1. Log in to your account.
2. Navigate to the 'My Account' or 'Profile' section.
3. Look for the 'Shipping Addresses' or similar option.
4. Verify the details of your secondary delivery address. Make sure that all the required fields are correctly filled.
5. If you notice any errors or missing information, select the 'Edit' or 'Update' option next to your secondary delivery address.
6. Carefully enter the correct information in the respective fields.
7. Double-check the address before saving the changes.
8. If the address is still considered invalid, please verify the format and structure of the address. Ensure that it follows the proper formatting rules, including the correct street number, street name, postal code, and any additional address lines if necessary.
9. If the issue persists, please contact our customer support team for further assistance. They will be able to address the issue more specifically and provide tailored guidance to resolve the problem.

Remember, our goal is to ensure your secondary delivery address is entered correctly and validated. Feel free to reach out to us if you have any further questions or need additional support.