Can't install, ask for help

我下载和安装它， 但我不能安装它。已经是 3.5% 5% 了，失败了。我已经研究了几天了。请求帮助下载，我会尝试的功能，并立即购买它。

I downloaded and installed it, but I cannot install it. It's already 3.5% 5%, and it failed. I have been researching for a few days. Ask for help downloading, I will try the feature and buy it immediately.