Hi
Sorry for late reply.
I was extremely busy nowadays.
I did online assessment almost 4 months ago but it didn’t go well.
I already mentioned that their assessment was tough compared with other aviation assessment.
If you are smart person, you have nothing to worry about it.
Simply you need to sit down at your desk for assessment then do it.
I think there is no tool to prepare their assessment since it is quite different from ordinary aviation assessments.