The shortlink: http://bew.rocks/bugs has also been changed, however some may need to clear all browser cache in order to reach it via the shortlink, otherwise you might end up at the old bugtracker.
If you previously created an account on the old bugtracker, you will need to create a new one on the new tracker. All the open issues from the old tracker have moved to the new one. If you reported an issue, and are tracking it, you will need to re-add yourself on the new tracker.
The new tracker is MantisBT. It's not as pretty as the old one, but it works better.
It should be relatively easy to use, but may take a few minutes to familiarize yourself with it.