For all android user for you to download the game follow this steps
1: delete file and game
2: re-download the game
3: after go get file (do not extract) the file instead press it and rename the file zip to apk and save if done well you will see the image change
Example look below...
Before AURA_Hentai_Cards_Cheats_1.6_Android.zip
After AURA_Hentai_Cards_Cheats_1.6_Android.apk
I hope this help !!!!!