After updating your legal documents, you can resend them to users for acknowledgement. 

1. In the Studio, navigate to Settings > Legal documents. 
2. Click Confirmation settings.
   The Settings for Confirmation Dialog opens. 
3. Enable the toggle Resend for Confirmation.
4. Click Save.
   A confirmation message to notify all users opens.
5. In the confirmation message, click Notify all.
   When users open the app next time, they will see the dialog to accept the legal documents. Only after accepting can they proceed to use the app.