Complete existing Woo Commerce Checkout process, etc.

1. In logged-in Customer Mode the database is mistakenly populating information from My Account. The Shipping address is populating with the billing address and the "Ship to a different Address" is mistakenly being populated with the Shipping address from My Account. The "Ship to a different Address" form should remain blank and if a customer fills this right side out the left side pre-filled form should disappear or be grayed out.(see attachment logged in as [login to view URL]) [login to view URL] the Payment Screen, I want to make it like the attachment where customer can click the box to auto-fil the billing address to save time (see attachments checkout [login to view URL]) [login to view URL] forms for correct error messages, [login to view URL] customer does not enter @ sign have error message say an @ sign is required. It seems my error messages are not activating even when customer only enters one character in each field. 4. Fix shipping modules. I want USPS, UPS and DHL shipping modules to work with the checkout. I want to be able to sort their display. And it is important that I can add a handling charge to each carrier rate, ex. USPS, UPS DHL>>>> AND<<<< to each service, ex. Next Day, 2-Day, Priority Mail, etc. I do not care if you accomplish this in real time api or by a table. 5. Remove table format from Checkout screens and position cleanly and nicely the texts. 6. Add tracking field box for DHL. 7. The site must work with [login to view URL] and PayPal 8. Scale down front page images, they are too big. 9. Ensure that template, paddings and images size correctly for Desktop and Mobile on all major browsers.