@Annaelisa I have moved this and this message of yours here because they have nothing to do with the How to center Images and Text on the new Connect topic and perhaps more relevant here on the star video discussion topic. As you will appreciate I get many messages and I’m tagged in may topics so it’s hard for me to respond to all and even harder when the messages are on the wrong topic.
I believe that your data on the Leaderboards System is being constantly deleted because when you are entering your star video details you are ticking the checkbox “Tick the checkbox if this star replaces a previous star” which you shouldn’t. Please read the System’s context sensitive help for this checkbox.