What you want to ask is the reason why the cow can't download it? The reason for this is the following：

1, the memory space of the mobile phone is insufficient to accommodate the cow fast transmission software, and some space needs to be released.

2. Network problems. If the download icon of Cow Express cannot be downloaded, you can change the network. For example, try changing another network, which is usually caused by the network jam, or the software has been offline from the relevant website, so it can't be downloaded.