Marketpress Support - support on adding new payment method (Paypal Pro)

Hello,

We are working on your marketpress ecom plugin to add new payment method i.e. Paypal Pro. We are able to set link and make the sandbox payment to paypal account. The only problem we have about getting the information regarding the Order and its location in the db. we know you are storing all the information in the form of meta data. Could you plz elaborate this structure in bit more detail.

Your quick response will really help us to achieve the result.
Thanks,
John