I have written a previous post How to get indent for your paragraphs" (click "BACK" button to get back to this page. It has worked for most, but a reader commented it didn't work for her and asked for an alternative. As I can't answer in the comment, I have to do a new post.
Try using the tag in the first few of the paragraphs. I will take a screenshot of the post editor to show how I got the indent in the above paragraph with a screenshot (click to enlarge).