Hi everyone! I'm the author of AnnoCPAN. I wish I could say the "maintainer", but as I'm sorry to admit, I've hardly done any maintenance on it for for quite a few years. I've mostly moved on to other things, as often happens in life. If someone is interested in taking over maintenance, perhaps we can arrange something.
I just tried adding a note, and it worked for me, so at least I'm happy to see that it isn't completely broken. But given that the code is ten years old, I wouldn't be surprised if some parts of it have failed to keep up with the times (or maybe there are some bugs that have been there all along, of course).
I do worry about keeping such an unmaintained website up. I hear very rarely about it, in either a positive or negative way, so I wonder if people are actually using it much. This sometimes leads me to think it might be better to pull the plug on it to have one thing less to worry about in my life.