Text slide doesn't work

Hello,

I’m using your plugin but I have a problem with the text slide. The others (video and image are working).
But with the text slide, we can’t see the text on the slide even when i change the color.
I’m using the theme “Spun”. My url : https://madiba.colibre.org/madiba/

Can you help me ?

https://www.ads-software.com/plugins/slideshow-jquery-image-gallery/