lesson missing image on iOS app

On this iOS app, in the responsive web design certification course, in the Basic HTML module, in step one of the understanding HTML attributes lesson, the cat images are not visible and the display to mess with them appear to be missing.

Check the lesson on iOS yourself to reproduce.

On web the cat photos can be seen and modified, no cat photos on iOS, so I expect to see cat photos.

- Device: iPhone 14
- OS: iOS 26.6.1
- on App Store app

Reproduce the issue in the App Store app on an iPhone by opening the Responsive Web Design certification course, Basic HTML module, and the first step of the Understanding HTML Attributes lesson. Compare the iOS lesson with the web version and inspect the mobile lesson rendering path. Done means the cat images and their display controls are visible and usable on iOS.

Written by the indexing model from the issue text.