JAPANESE PLEASE & recommendations

I had begun to learn German with this app and it is extremely beneficial!!! Although I had been originally looking for Japanese, and was disappointed, the lessons themselves are thorough. My only recommendations are these:
•Japanese language
•weird glitch where when a new word appears, it does not have the option to review what it means. Thanks!!

Kawaiibear about Duolingo Learn Many Languages for Free, v4.6.2