Do not rely on any advise by agent. They're low wage workers who do not know the law. VJ is typically more accurate. You can also consult with an immigration lawyer who should reaffirm it.
What do you mean by "missed"? Sounds like a misrep.
Congratulations with your visa approval. Be careful how you answer questions in any potential future application, especially questions whether you ever told US officials something that wasn't true.