Static first page causes a flaw

This plugin looks very promising, but for my purposes it has a fatal flaw.

I have a static first page (“About”); the second page is the blog. When I change the settings on Blog Designer, the text of About is erased and the blog content appears instead. The Blog page is still okay. When I recover the text of About, the Blog Designer changes disappear. I’ve gone around and around on this and I can’t make it work.