Impossibile to pay orders from order list

-- HikaShop version -- : 3.2.0
-- Joomla version -- : 3.4.7

I cannot see a Pay order button in the order list when an order has not been paid. And the documentation is not aligned with my back end views, I cannot find a place to set the order status when it is unpaid.
And if someone try to pay it after it is impossible.
As you can see from the attachment there is no way to set the order status in the configuration. How come?
Thanks
Elisa

Dear Philip, I've added a screenshot of my backend where there is no field where I can set the status of unpaid orders as said in the documentation. If you confront my screenshot with the one on the documentation you will see that I do not have fields such as Default oder status or Unpaid order status (see attachments).
When I have an unpaid order (that cannot be marked as confirmed) and try to pay it via the orders page in my account, no PAY NOW button display, only "reorder".
What should I do to set the unpaid order status? How come the button does not display even if I set to YES the Payment of orders not paid immediately?
Thanks
Elisa

Dear Elisa,

I've added a screenshot of my backend where there is no field where I can set the status of unpaid orders as said in the documentation

Just to have all cleared.. every time an order is not being paid I have go there manually and set it to UNPAID? there is no way to set this status automatically?
thank you so much
elisa

Thanks Jerome, that might be useful!
regards
Elisa