You are using the previous version. It will still work, but it is not as user-friendly as the latest version.
The latest version is available here.
Disclaimer: This is not an official website of SBS Transit. The sole purpose of this website is to access the SBS Transit e-timetable, which is no longer accessible on the offical website. The author created this project in his own free time and is not related to SBS Transit or Transitlink in any way.