Portfolio Slides Tab not functional

[nathol]

Hi there, I have the latest version of the Unicon Theme. Downloaded from Themeforest beginning June.
I’m having difficulties uploading images to the “Portfolio Slides” Tab. There are no options to upload images.
It only reads this:
“Project Slider Images
You can upload up to 50 project images for a slideshow, or only one image to display a single image.
Notice: The Preview Image (on Overview, Shortcodes & Related Projects) will be the Image set as Featured Image.”
Please help, thanks

Ticket