No one is trying to blow you off as far as answering your question, it is just that sometimes there are many many threads about the same thing, and people get tired of explaining it again and again.
first though, you get reviews after you are published, before that you get beta reads or critiques.
Also understand that a lot of the time, unless the crit is done by someone with a lot of writing experience, they may flag things as passive that are not. Happens a lot, oh this is passive because it contains this word. It may be passive because it contains certain words, but that is not always the case.
Do a search right here on AW for passive voice--the search tool is in the blue bar under where you sign in, there you will find more threads on it than you can read in a week.
Under the tech forms Rodger Carlson has a thread--it's a sticky with some macros you can use in MS Word to look for words that may indicate passive voice. They are a great help in that they make you look at word choices and see if you can make the sentence stronger.
Most times what people are flagging is not passive voice, but weak writing.
Shawn, a little ashamed of AW'ers who have forgotten we are here to help as well as learn.