Changes to eWay Payment Gateway configuration and others

I need following changes done on my PHP Core custom website. It's urgent. Website is already integrated with eWay payment gateway. But some changes are required to make it fully working. 1) When I purchase through demo card, the product is not available in MY ACCOUNT -> MY PRODUCTS page. Probably that’s why I don’t see successful purchase in my Admin Panel (backend) under Orders. 2) We need to copy Customer Details fields to Shipping Details fields on eWay page. 3) There is an issue that the correct country field value is not being copied to Customer Details -> Country and Shipping Details -> Country 2/3a) Basically final values on checkout page should be copied to Customer Fields and Shipping fields. And update the user information in Website database based on user's updated values on eWay payment page. 4) Success or Failure on eWay page doesnt get notified to me. Even customer is not notified about the purchase invoices. This functionality exists, we just need to use them in this purchase process. 5) Can we put a note below the buttons with some space in between that "Note:- If you Check out with Credit Card, you will be charged in AUD equivalent of product price in USD at the time of the transaction. (Right now $Product Price USD = $Converted Price AUD)". 6) Showing USD and AUD Prices on each Product Details page, with bigger fonts. Also in Cart -> Grand Total should be shown as USD and AUD prices both.