How to add pictures from camera roll to instagram story

Click the “Camera roll” at the top of the “Memories” screen. Your gallery will open up, and here, you must select a picture you wish to post to your Snapchat Story. Once you've selected your target pictures, click the Share icon at the bottom of your screen, The icon looks like an arrow.

Those on Android can try clearing app data and cache to see if it fixes the problem. If the camera is not working, make sure Instagram has permission to use the camera on the device. If this doesn't work, try uninstalling the current version and download an older version of the app to see if it helps.