Marketpress Order Status number?

Im just testing the checkout process of Martpress working with Appointment +
at the end of the checkout process there is a link click that shows user their recent orders + a search box for them to search for more infomation about their order.
When i checked the emails for that memeber. they did not recive the order ID there.
what is the code that calls up this ID that i can place in one of the template emails that will be sent to users confirming their appointment (after checkout) ?

Here is screenshot -

Login url:
register url:

Support Access is open

(please feel free to create an account to test - need to be loged in to checkout + you can transfer yourself some credits through the users area for testing)