Author made cardinal sin of packing Mobile version into RAR
pack mobile version into ZIP...
difference is substantial and obvious if you ever used mobile phone and had pleasure of experience one of many RAR mobile apps
Viewing post in Lucky Paradox (NSFW 18+) comments
There is the RAR and Zarchiver apps that will help extract it. The steps how to install it are here: https://www.patreon.com/posts/82619463