Cart Configuration - ECJC

Looking for an ECJC cart expert - Joomla Cart is completely intergrated and works EXCEPT the following needs to be debugged 1. the currency...transaction was for $80CAD except paypal charged client $100 CAD...confused 2. have website paypal payments pro and when it uses debit/credit card it brings buyers back to right page, but if someone was to pay via express pay it doesn't process transaction or bring buyers back to the right page of the website. 3. Can’t get add in support packages configured properly. Users need to have option to buy 1 month, 3 mo, 6 mo, 1 year... how do we code these as additional purchases in the cart before checkout. They would be billed in recurring payments on monthly basis 4. Can’t figure out how to get customer points to show up on the users cart page URGENT..needs to be done in next 12 hours. Budget $30 max