Instead of starting with a welcome page, you can display the first question page at once. This is useful if you embed the survey your website with an iFrame.
Please proceed as follows, to deactivate the welcome page:
Select the desired survey in the Overview
Click on Settings
Under 'Welcome page' deactivate the option to show the welcome page
Click Save settings
The survey will start with the first question page. You can change the option at any time, if the situation has changed.