Sample Text on Product Image

Hi
In the product details template when you hover the image or gallery the "Sample Text" font comes up (as show in the picture attatched) . How do you remove that. there isnt a show text option for the gallery or product image. I tried to manually remove it but when you try to edit it opens up the box to upload photos. Im using Nicepage Desktop app . Ive seen there was another thread for this but it wasnt resolved yet.