Slow connection on the web site, serious hickups in the payment system (billed twice, mess up in the dialog box and so on) and the download (8 chapters missing). Probably the server infrastructure is not strong enough.

BUT : fortunately, very efficient, honest and committed-to-help after sale service. All was solved and ironed out in 2 days, with no mishap, no delay and even no regret. Genuine professionals.

And it is a very good German language course, for intermediate learners who have already real life experience in the language.
It is a work tool, 100% business oriented : market, projects, meetings, accounts... If you need this, perfect. If you want tourism, culinary, family, culture and such, it is not there. Worth knowing :^)