I would understand it now.I think the instructions are very clear: do not ascend directly to the surface and respect the deco stop(s) shown by your computer.
I found it incredibly confusing when I was a new diver, because my open water class didn’t brief us on anything except don’t go past the NDL: they didn’t explain what would happen if you go in accidental deco.
Most manuals just display screens after screens explaining each screen rather than walking you in the chronological order of a dive.