If you see this message while trying to complete a payment with us, it means that the transaction is currently waiting for revision from the payment provider you've selected.
The extent of this process can take up to 24h, depending on the payment provider you're using.
Regardless of the time, it'll take, once the payment confirmation reaches us, the order will be completed automatically.
In the meantime, if you wish to confirm that everything is going as expected, please feel free to contact support by creating a ticket here. Provide them with the order number/invoice ID you got from the payment provider and they'll be able to follow up on this matter.