But because I think their is bugs in German study. So I didn't get new words for a long time, I just start got new words 4 days ago.

I get around 20 new words but I have to repeat over 150

when I am learning German I have to repeat some old words again and agian, also I type it right everytimes, they are still appearing eveyday such as Bühne and Hand. There are lots of words appearing everyday. I have just learned 536 words now and I want to know why I should repeat over 100 words everyday. I can remember most of them.

I am learning German, and have the same problem. the old words repeat again and again.