Gets Error with the Sandbox now that TLS 1.1 is shut off

[plawrencejr]

Now that they shut off TLS 1.1 on the Sandbox the code does not work anymore for ChargeCreditCard. The line. Even if the Server registries entries are set to shut off TLS 1.0 and TLS 1.2

controller.Execute();

You get a return exception:
The underlying connection was closed: An unexpected error occurred on a send.