i try to add a fullscreen button for the memory game library. But i really don´t get it. I tried different things like
1. downloading the folder H5P.MemoryGame.1.3
2. editing the library.json (added the line "fullscreen": 1,)
3. tried to reupload the zipped folder content (with 7-zip)
4. i also tried to manually zip it on the command line (this post didn´t help me https://h5p.org/node/617131)
5. when i download content which i have built with the memory game and reupload it, it works.