Thanks, I'll use https with LetsEncrypt then.
Hello Pascal, I'm not in https, that's why it's not working. Do I need to switch to https or is there an alternative ? I have checked, it works with your demo. Best regards.
Sorry, I ommit to mention that I'm using the SDK for web. rainbowSDK.contacts.getConnectedUser() is exactly what I was looking for. Thanks Andrea and Olivier.