I created a web app that hosts a couple of tiffs and pngs via ArcServer as image services. The images are local and pushed to ArcServer as Image Services and the folders are registered. The image services are added as layers to my web app via ArcGIS online. On a PC, everything works fine. When attempting to view the web app on my iphone or ipad, I get an error upon opening the app that the images cannot be loaded and are not part of the layers when opened.
Any thought on why this is happening in the IOS environment only, and any work around?