Board Thread:Shadow Fight 2 Discussion/@comment-180.214.233.7-20170729035902/@comment-25669516-20170729112903

It is an old version of the game and is no longer supported. Also probably the apk you've downloaded could be modified somehow (I am assuming you got it off a third party site since it's an old version) which is hindering the download process. Try installing the latest version and try again. Also restart your router or switch to another network if possible.