Hi @sandradrz,
This is expected behavior, as described partially here:
Processing – Payment received (paid) and stock has been reduced; order is awaiting fulfillment. All product orders require processing, except those that only contain products which are both Virtual and Downloadable.
Completed – Order fulfilled and complete – requires no further action.
In your situation, it sounds like payment is not required, so the payment portion has been completed. The order will remain in a Processing state until you manually confirm that the product has been fulfilled.
If you’d prefer the order be immediately set to Completed, you’d want to update the product settings to reflect that it is both Virtual and Downloadable. Regardless of if the product actually contains downloadable content, this will auto-complete all orders that contain this product alone.
Thank you,
Joey