In most cases, if you find that your site's images are not appearing, this is due to an issue with a third party app.
Turbo users
If you are using Turbo, the first step is to go under Sales Channels > Online Store > Themes > Customize > Theme settings > Performance and change to "Sport" mode and see if this resolves the issue.
If so, then the issue is likely related to an app.
Finding the app
To try to identify the app that is causing issues, we suggest first making a list of all apps you have installed, as well as third party integrations that may have been installed manually, such as tracking codes or popups.
In addition to your Apps dashboard in the Shopify admin, another good place to start is using Google Chrome's built in developer console tool to see errors and external JavaScript files that are being used. This can sometimes help you find apps or integrations you may have forgotten about.
Pay close attention to the filenames used as they can often provide clues into the name of the app or integration.
We then recommend disabling or uninstalling each app, one at a time, to see which one might be causing the issue. Note that you may need to reference your app's documentation for full uninstall instructions.
If you identify an app that is causing issues, you will either need to stop using the app, switch to Sport mode, or contact the app develop to see if they can help you resolve the issue.
Limited support
Unfortunately, Out of the Sandbox cannot provide support for conflicts with third party apps. To resolve the issue, you will need to contact the app developer for assistance.
Known issue - resolved in Sept/Oct 2018
There was a known issue with a third party library causing issues with image loading in Parallax, Responsive, Mobilia, and Retina in certain versions of Chrome and Safari as well as select mobile devices.
This issue has since been resolved in all of our themes. You can learn how to update your theme here or disable 'hover to zoom' to resolve the issue.
You can temporarily disable "hover to zoom" and restore your images. You can change this under Sales Channels > Online Store > Themes > Customize themes. Click the "Theme settings" tab and then the "Product Grid" option. Under "Product Gallery" section, disable "Hover to zoom."
No versions of Turbo and Artisan should have this issue.