Instagram just introduced the ability for users to share others users’ Stories through Instagram Direct messages. If you want to stop users from being able to share your Stories in this way, our guide will show you how to disable this ability.
Note: These screenshots were captured in the Instagram application on iOS.
Step 1: Tap your profile picture in the bottom-right corner of the screen.
Step 2: Tap the gear icon.
Step 3: Tap “Story Settings.”
Step 4: Tap the blue toggle next to “Allow Sharing” to turn this ability off (the toggle will turn white). This will stop users from being able to share your Stories with others through direct messages.