Limited resources for Practice Questions available

Hello
I recently joined OpenTuition for ACCA and I really enjoy it but I have one small issue here…
In the introduction lecture you said there is lots of questions available to practice but after each chapter I go to the Practice Question section and keep getting the same set of questions every time for each chapter. Answering differently on the following inquiry “Would you like to resume where you left off?” bring me to the same point where I get again the same questions.;/
Am I doing something wrong?

Thanks in advance for your comments
Ewa