How the reading paper is built
The paper runs as a set of tasks rather than one long text, and g.a.s.t. states that the working time and the number of tasks can vary between test forms while every candidate takes an equally long test. Some tasks are pilot items that do not count towards your result, and you will not be told which. Marking is automatic on a points scale, with TDN 4 sitting in a published band of it.
g.a.s.t. does not publish per-text word counts or a fixed question-format specification, and it does not describe the digital test as computer-adaptive. Any page that gives you a per-task item breakdown, or tells you the test adapts to your answers, has gone beyond what the awarding body has said. This page prints the published task count, duration and item count with their source and stops there.