Gribox e-commerce and PayPal

Good morning!
I would like to know how payments work on the Gribox store.
Specifically, I need to know what happens when a customer pays—for example, via PayPa or other methods.
Does the order status automatically change from "New" to "Completed" after payment, allowing the customer to download their product?
The reason for my question is that, during testing, the download isn't offered unless I mark the order as "completed."
Thanks!

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