QR codes can be activated in any state of the experience, whether in proposal mode or published mode.
First, you need to enter the experience in edit mode. In the services section, you will find all the ones you have created. To activate the QR code, scroll through the horizontal bar of the service you want to activate.
2.Once there, click on the three dots that appear to edit the service. You will see a button that allows you to enable your QR code.
Make sure that when you activate it, the service changes to green (active).
3.Then, when you return to the administration section, in the reports area, you will be able to download the experience file, which will include the QR codes you have added.