Due to a bug in our provisioning system some users were issued 2 Shadowsocks ports on each VPN server. One port that worked, one port that did not work.
We've cleaned this up now. If you use our VPNGUI or Shadowscale app you don't have to do anything - they update automatically.
If you use a different Shadowsocks client, like Shadowsocks for Android you will need to re-scan the QR code if the port you see in the app no-longer matches the port shown on our website.
Our apologies for the inconvenience.