The irony is that you do not appear to understand the difference between the concept of substance and the property that St. Augustine was trying to teach with respect to the Eucharist. Perhaps if you had an actual understanding of his writings as a body of work, you wouldn't be forming your opinions based upon the few snippets you have found on dishonest anti-Catholic websites and then trying to defend them with other snippets gleaned from a speed reading exercise.
“you have found on dishonest anti-Catholic websites”
Actually, I got this from reading Augustine’s works. I didn’t get it from a “dishonest anti-Catholic website.” Unless Augustine himself is dishonest. You keep making assertions, but you’ve punted on direct challenges to address the words of Augustine multiple times. You’re just talking to talk, and it’s tiresome.