Name of the course:
5000 words sorted by frequency (strict typing) - German
Link to the course:
Link to the forum where I tried to contact the course creator / maintainers:
First things first: I find this course extremely useful, so many thanks to the creator and original maintainers. This is a must for anyone who seriously wishes to learn german vocabulary.
As I go through the course carefully [~10 words a day, thus ~1700 / 5000 words since October], I found a few inaccuracies and potential places where the definitions and synonyms could be improved. I have a very systematic learning approach, and have noted everything I found so far. Since the course still has a large number of active users, I will gladly give back to the community and share my findings so others who want to follow the course at a later date can benefit from them.