So I've mentioned on another thread having this problem on and off for the last few months. In the last few weeks amazon has become unusable for me to download metadata. I have changed ip's (even what country my ip is in), what amazon site it gets metadata from, all kinds of things I have tried. once in a while it will give me 3 or 4 books but most often just days of doesn't work. I had gotten to copying from browser to comments field and typing in tags and series information by hand
On reading this thread I saw the mention of the goodreads plugin and got it and started using it. Since it is owned by amazon I'm thinking all the KU books and self published will show up there also. I just did a search for 35 books and got back 27 results. So it is working better than amazon for me at the moment.
I also want to add my thanks for calibre.. I have kicked in money a few times and will again. I use it a lot. I suggest for all of you that really do use it to kick back on paypal or other way to kovid a few dollars. I have over the years sent 10 to 25 dollars each time. I have some comercial software I have to use and have payed hundreds of dollars for. It doesn't work as well as this, doesn't get updated as often and bugs fixed as quickly. It really is worth our time to let kovid know how much we appreciate it. I think I will go do that right now
Words are nice but actions speak greatly. I maintain a community website and when members send me a few dollars in thanks for the time and effort I put in it really means a lot to me.