Query regarding APA formatting

Hi, I am pursuing my Ph.D. in “Medical Waste Management in Florida”. I have written my dissertation and submitted it 2 times to my chair but always faced rejection. The major issue of my rejection is APA formatting. No matter what I do, I am not getting the format right. I have read several guidelines and online tutorials to understand the formatting but still I seem to miss on something. I am afraid I’ll fall into the ABD category!! I also thought about hiring an editor, but I am not too confident about their reliability and confidentiality. Can anyone please suggest as to what I should do to come out of this situation???