Configuration changed a lot since 1.0
and you should start fresh as
explained in the configuration section.
Delete your generated vha.vcl
(the vha-specific VCL is now static and bundled
in the package), remove all old vha references from your VCL and add this at the
top:
include "vha_40.vcl"
sub vcl_init {
vha_opts.set("token", "YOURTOKEN");
}