I have exported my book file to Epub but it has clipped both sides and bottom of the pages for all the files as shown below. The file size is 203 x 203mm. The clipped file size is about 198 x 198mm which means some text is being cut off and the page numbers appear on edge of page. I have exported another book with a file size of 185 x 185mm with no problems. I would appreciate suggestions how to rectify this problem of clipping of the pages.
What version of InDesign? What EPUB reader? What operating system?
I am using EPUB 3.0 Fixed Layout, Adobe InDesign CC 2015 on MacBook Pro 10.10.5.
I don't think I've ever seen a Fixed Layout EPUB get clipped. I'd start with some basic troubleshooting.
Start by restoring your InDesign preferences:
Another possibility is that the InDesign file has become corrupt: