diff --git a/client/src/hep-client/index.js b/client/src/hep-client/index.js
index b1f77a09..956e8d3e 100644
--- a/client/src/hep-client/index.js
+++ b/client/src/hep-client/index.js
@@ -1,6 +1,6 @@
 import * as axios from 'axios'
 
-const hepBaseUrl = 'https://www.hep-verlag.ch';
+const hepBaseUrl = 'https://stage.hep-verlag.ch';
 
 export function register(registrationData) {
   return axios.post('/api/proxy/registration/', registrationData);
@@ -11,7 +11,7 @@ export function login(username, password) {
 }
 
 export function emailExists(email) {
-  return axios.post(`https://www.hep-verlag.ch/rest/deutsch/V1/customers/isEmailAvailable`, {
+  return axios.post(`${hepBaseUrl}/rest/deutsch/V1/customers/isEmailAvailable`, {
     customerEmail: email,
     websiteId: 1
   });
diff --git a/server/registration/view.py b/server/registration/view.py
index 433b7e24..d7294016 100644
--- a/server/registration/view.py
+++ b/server/registration/view.py
@@ -20,6 +20,7 @@ class RegistrationProxyView(View):
     def post(self, request, *args, **kwargs):
         hep_client = HepClient()
         data = json.loads(request.body)
+        data['group_id'] = 5
 
         try:
             hep_data = hep_client.customer_create(data)