The unwanted cards are the cards from the preview.
In the preview, random cards that have not yet been purchased are shown and gradually replaced after a certain amount of time. These seven cards (demo files) are played at random.
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It is possible to switch off the cards in the Preview tab.
Step 1: In the settings in the section "Clips" in the item "Free Preview Push" select the setting "Never".
Step 2: In the Preview tab, click on each of the seven cards and click on the tick icon. The show will be inactive and in the picture, the colors are slightly changed.
Note:
If a show has been disabled in the preview, it will remain disabled even if the show is purchased later. So this show has to be reactivated later.