When you click on the quick view button You will see product details in the popup. Product Name, Image, sizes, variants, Add to cart button, description, View detail link etc.
When you will hover the cursor on the image. you will see the large image like below given image. This is the Image zoom effect in this app.
For setup this you need to enable this option only.
For this, you need to go to the app dashboard >> settings button >> then in general settings you can unmark ( uncheck ) the Enable Image Zoom option.
Then please click on Save Settings button. It will enable on Your Website.
If there is some issue or confusion please let us know.