I am facing the same problem, except it's for the "Order placed" event.
Some tokens are available ([commerce_order:total_price], [commerce_order:order_number], [commerce_order:placed], [commerce_order:mail], [commerce_order:order_items]) and others not :
- [commerce_order:billing_profile]
- [commerce_order:payment_gateway]
- [commerce_order:shipments]
As jrochate, if I use the test function it gives me the expected result, meanwhile the real event firing not.
Everything is good in the default drupal order receipt sent to customer, but I cannot do what is excepted with this module and send a mail to the shop with all details.