Yeah, I might be having the same issue, or a very similar one. My punter is a freshman who has played in 100% of both games. He just mailed me complaining about not starting, and there was a significant work ethic loss. I can't find where to name him the starter. I have him 1st on the depth chart, but I can't find the page to make him the starter. I know it exists, I have stumbled across it before, at least for offense and defense.
**edit** found the place to name the starters under player settings. I also noticed that if you fill in the depth chart for a position encompassing 2 positions (like db or lb or dl) it will follow that, even if you filled in the other more specific depth charts (cb vs safety, ilb vs olb, dt vs de).