It's been a long while since I've had this problem so wanted to see if anyone else is experiencing it. I am trying to add an independently published book to my TBR. The site initially 'finds' the book, it appears for 1-2 seconds offereing me the button to add it to my TBR list, but before I can click on it, the site comes back with the message that the book couldn't be found.

If you provide the details of the book you are trying to add, I could give it a try.  Any reason not to share the details?

Jeanne, try searching for the book by title or author, not just using ISBN.  Just a thought (and probably a poor one.)

Thanks for suggestions. I did a 'search' by title and the book showed up.......and it says it's on my TBR even though the error msg was saying ' not found'.