The name of the course: Alemão - Vocabulário Ninja
A link to the course: https://www.memrise.com/course/644561/alemao-vocabulario-ninja/
A link to the thread where you have already reached out to the course creator: [Course Forum] Alemão - Vocabulário Ninja (AJUDA!) (HELP!)
A couple of sentences on why you want to be a contributor:
I want to make small fixes when necessary (since there is no way to communicate between users…).
Besides I intend to do the entire course and I review on dictionaries the meaning of each word, therefore I can find mistakes or improve the course. If you notify the author, he may just watch the forum about the course and correct the mistakes I post. No need to become a contributor. If I eventually become a contributor, and since the author is using the course and still improving with his learned vocabulary, I may not add new words, only improve and make the previous translations better (some look incomplete).