Activation of 3D Secure
The payment gateway has taken over the enrollment of contracts in 3DS1 and 3DS2 from all merchants.
Thus, you do not have to do anything.
The 3D Secure is enabled for all eligible contracts.
You can check this in your Merchant Back Office, via Settings > Company, Authentication tab.
By clicking Expand all, you can view the supported versions of 3D Secure.