The import stays in “Waiting for product creation” status, until the operator accepts the products linked to your offers.
However, in some rare cases where the operator has accepted the products, the "product-id" and "product-id-type" elements associated by the operator during the creation can differ from those you entered. In this case, matching is not possible and therefore the product remains in “Waiting for product creation” status.
For your offers to be created, the operator must add your identifier to the products, or you must import another file with the current identifiers.