Firstly, please check if Ajax Add to cart function is enabled on your theme. Our app currently does not support File upload option with Ajax add to cart function.
You need to disable Ajax Add to cart option
- From Shopify admin page, click Online Store > Themes
- From the theme that you install the app, click Customize
- Select Theme settings > Cart (or Cart page)
- Disable Ajax cart (It may be different on different themes):
If you have done the steps but the file upload does not show, or you cannot find the option to disable Ajax cart on your theme, please contact us for help.