CORS Not working for AngularJS Webapp

We want to make reqest from some ‘origin’ of our web app. It is made on AngularJS. We want this requset pass tyc io as proxy and pass to our backend API after this and get a responce. What CORRECT settings of CORS on tyc io should to be. Cos now we have an error

XMLHttpRequest cannot load http://thethingscloud.cloud.tyk.io/cumulative/. Response to preflight request doesn’t pass access control check: No ‘Access-Control-Allow-Origin’ header is present on the requested resource. Origin ‘http://xxx.xxx.xxx.xxx’ is therefore not allowed access. The response had HTTP status code 400.