EZA replied with a link to the other person's blog asking for an explanation. It now appeared I was a thief (although the dates were on my side).
I explained that it was purchased PLR and, when submitted, there were no traces of it online. (There weren't). I also admitted I didn't understand their explanation of exclusive use and thought it applied to PLR articles. This really was my bad. I should have read the TOS a bit closer before submitting.
The good news: EZA understood and was kind enough to reinstate my account.
Be warned: Unaltered PLR will not fly at EZA. If you do buy articles and submit them to EZA (I no longer will), be sure to heavily modify them. They are checking multiple sources for duplicate content. Google for sure.
Better yet, write your own articles or purchase exclusive, direct articles from reliable authors.
This was my first and last experience at buying pre-written Article PLR for submission to EZA. From here on out, I'll stick to writing my own. (I do enjoy that Q10 software.)