I can see all stories and their subtasks in the "Backlog" view, however, when I start the sprint, and go to the board view, I can't even see the "Subtask" type.
All of my subtasks are assigned to the same sprint, and have a story as their parent, which appears in the sprint.
I also can't see the board's settings, instead I have only "Configure board" which doesn't seem to have all options:
