I type the correct translation into German and it will not accept it
What exactly did you write?
Also, if you came to this sentence discussion, I don't think you could have had a "translate into German" exercise -- either "translate this written German sentence into English" or "listen to this German and write it down in German".
If you have a screenshot showing the exercise, your answer, and the error message, that would be extremely helpful: please upload it to a website (e.g. imgur) and tell us the URL.