How to use the SocksDroid App?

[Sean66]

I run the SocksDroid App,
filled the config to App:
1.Socks5 Server IP to App's Server IP,
2.Socks5 Server Port to App's Server Port,
3.Socks5 Server Username to App's Username
4.Socks5 Server Password to App's Password
I'm sure the SocksVpnService was started, and running,
but I can't access https://google.com using the explorer of Android system default.
I can't access http://google.com even I checked the Per-app Proxy button.
Could you show me how to use or config the app?