I don't usually want to write a blog post to only inform about a bug, but this one is a big one and after hours of work I have to say that it is not easy to fix.
It seems that AO3 has changed the HTML code for Mature/Explicit/Not Rated fics. Right now, the AO3 script picks up only a few things (language, word count, chapters) but everything else has changed. I am fixing it as fast as I can, but I have to warn you that I'm not professional with any kind of coding and most of the time I do things by trying them. I change something, I test, I see if it works or not and I change it again if needed. It takes a lot of time, but with my limited knowledge, it is definitely the easiest way to do it.
I'm sorry for the hard time this might give you! This is a work in progress and so far I've gotten the title and the date of last update/completed. The starting date is missing completely from the new code. I hope I can give you a fix within the next few days, at the end of next week at the latest (and at least with something, be it small or big). Until then, you can either fill in the information manually or just put a link and wait for the bug fix.