It's only 6 episodes and was cancelled after the first season was over (even with a cliffhanger - the size of it depends on the viewer probably as it's more a start to possibilities as an unsolved story line)
I have about 3 or 4 I frequently use - the rest are either new or very old (and therefore less safe). I think both my parents might have one (at least for their respective work places as they have to be changed regularly and there are many different ones required)... to some extend I have mine saved in the browser (protected by an extra master password)... that's where I got my list on paper from... which reminds me that I wanted to check it if there were any accounts on it I can't remember :D