The 'homepage' button allows participants to go back to the welcome screen of a campaign. It was previously displayed in all Qualifio campaigns in the top right-hand corner of a campaign's exit screen.
Now it is hidden by default and you can choose to display it. Here's how:
1- Go to the 'Exit' step of your campaign creation;
2- Below the text editor, there is an 'Options' section. There you can thick the box and choose to "Display the 'homepage' button":