VW Fitness Gym in customizer

There is no way to update the VW slider? I can only upgrade? I think a solution is maybe to change to homepage default slider instead of “vw-fitness-gym sliderbox” or I see I can ad a slide at the back end, but this then does not have the asame lay-out as the other images? I can add al sort of things, but I don’t think that the layout from the other slides is respected then.

If i have to chose the deafault slider, is there an option to add text other then the intro of the text where the slide refers to?

The page I need help with: [log in to see the link]