Ich berate Senioren im Gebrauch von PC's. Wie bringe ich diese nach der Blockade des Flash Players wieder zum Gehen ?
Flash Player has reached it's end of life. There's no magical way to make Flash content work for end-users at this point.
The screenshots appear to be a presentation built with Adobe Captivate. Current versions of Adobe Captivate allow content authors to publish to formats that do not require Flash Player. The easiest way to proceed, if you have the original Captivate source files, would be to simply re-publish them from a current Captivate version.
If you do not have access to the original Captivate source files, then you should contact the content publisher and inquire about the availability of an update.