<h2>Warning. Do not use this Reposter plugin.</h2>
1.You can't stop it. I have deactivated it, deleted it, reinstalled it, reset it, deactivated it again, but nothing stops this.
2. It chews up your articles and only presents the excerpt, so you lose the rest of your work.
3. The author does not respond. TO your request on WordPress, or your contact at his website.