There are many reasons for this.

1. This software is not compatible with your mobile phone.

2. Network failure

Your software is damaged or wrong.

You can:

1. Now determine whether there is a problem with the network. After troubleshooting the network problem, you can do the following.

2. Uninstall and reinstall. When downloading, change to a reliable place, such as Yisou mobile phone search, and download according to your model after logging in Yisou.

If this still doesn't work, it is incompatible. You can try another version, a lower version and so on.

I hope I can help you!