GTAForums is no longer using BBcode for formatting posts, so the Helper and Chain Game BBcodes fields on the download page have been replaced with HTML versions that can be copied and pasted in to GTAForums's rich text editor.
However, updating the preferences to reflect this is more difficult and I've decided to wait until I've had a chance to rewrite the preference system. I haven't been happy with how it functions currently and have been wanting to rewrite it for some time. I am planning to have this done by the end of this weekend. Maybe next week. Maybe.