No problem.. A friend was able to help me, now everything works as desired. Thanks anyway for your support. And by the way: The website is now online: www.lucaschenardi.ch
One more question: you asked via Instagram a few months ago what could be useful features. I often wished I could "lock" elements / text frames as an administrator, so they can't be moved by the editors.... maybe this is possible in the future :-)
Best regards, Carla