why I cannot enter a new shipping address valid
I understand your frustration regarding the inability to enter a valid new shipping address. Let's work together to troubleshoot this issue. 

Here are a few possible reasons why you might be encountering difficulties:

1. Incorrect Format: Double-check that you're entering the address in the correct format, including all necessary details such as street name, number, city, state, and ZIP code. Ensure that there are no typos or missing information.

2. Address Restrictions: Some systems have restrictions on certain addresses, such as PO boxes or addresses outside of the service coverage area. Verify that the address you're trying to enter complies with the system's requirements.

3. Character Limits: Confirm whether the address fields have character limits, and ensure you're not exceeding them. Shorten any lengthy address details if necessary.

4. Technical Glitch: Occasionally, technical glitches can hinder the entry of new shipping addresses. Try refreshing the page, clearing your browser cache, or using a different device or browser.

If none of the above steps resolve the issue, I recommend reaching out to our customer support team. They are well-equipped to troubleshoot the problem further and assist you with accurately entering your new shipping address. You can contact them at {{Customer Support Phone Number}} or through our Live Chat on our website at {{Website URL}}.

Rest assured, we are committed to resolving this issue promptly and ensuring your satisfaction. Thank you for your patience, and we apologize for any inconvenience caused.