Devin Matte

I'm also running into this and nothing on this thread seems to be helping. The token seems valid, I'm passing it through

zopim.livechat.authenticate({
     jwtFn(callback) {
          fetchFunction().then(
              function (res) {
              		// res is an object { id: string } where the string is the jwt
                    callback(res.id);
              },
          );
     },
});

And I'm getting 

{
  "success": false,
  "error": "failed to validate claims"
}

Is there anything I'm missing here? I'm almost certain I'm signing it correctly