Apple pay SSL handshake failure when connecting to Apple Pay gateway

HI,

ApplePay was working fine. Since we did a dot net upgrade to 6.026 on the server it has stopped working I think it is to do with the above issue.

In the code we set the protocol which matches what's on the server:

ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;

Has anyone experienced this before?