If the transaction you are trying to do is not going through 3DS2, and you are not getting back the 3DS2 specific resultCodes, this is probably because one of the required fields for 3DS 2 is not sent along in the payment request. 

Please refer to our documentation 3D Secure authentication for a detailed explanation on which fields to include to initiate a 3DS2.0 transaction: Checkout API or Classic API.