Hi, the website does not say much. But I looked through the introduction, it's like a e-tutor system. Usually these are only useful for self-motivated students.
Another thing I noted: the english on the website has alot of errors. I know humans do make errors (I do too), but if it is something that's published on your business' website, shouldn't it be vetted carefully first? As such, I'm quite wary of the quality of the questions given as part of the assessment.
There is a one-week trial, no harm trying it out first