Error: Error validating access token: The session has been invalidated because the user changed their password or Facebook has changed the session for security reasons

This error may occur in the Instagram account settings for several reasons. The main ones are:

• Password change:if you changed the password for your Instagram or Facebook account, all active sessions and issued tokens are automatically revoked.
  In this case, you need to reauthorize in the account settings in theSettings - Social profiles sectionwith the new password.

• Session reset by security:Facebook or Instagram may have reset the session due to suspicious activity.
  In this case, simply reauthorize in the account settings in theSettings - Social profiles section.