Downloading new book cover in Moon+ Reader Pro question

[nhgbslik]

While in book shelf view, and you click "Download Book Cover" on a book, Moon+ Reader Pro brings up a google search page, which then allows you to choose a cover you like more than the default you were given.

Anyhow, now it's stopped working for me. When I click "long tap to select an image" instead of loading, it gives me the message "not an image anchor".

No idea what this means or why it's stopped working. I know it's a small detail, but just wondering, is it happening for anyone else? If you have it installed would you mind letting me know?

Thanks for any help.