I tried to find the offer on my Fire HD for almost an hour. As soon as I saw that posted. I tried everything to re-fresh my offers, nothing worked. I never even got a chance to try.
And I realized I haven't bought any books this week. Thanks to the help by Blossom and others, I now have a virtual library that tells me what I bought without me having to do anything. Well other than making sure the date matches purchase date when I put it in Calibre. I am still having issues though figuring out how to set other VL. I have one with all my borrowed stuff in it. I mean library, paper, kindle borrowed, etc.
But I was trying to exempt the read ones so I only have the unread borrows. It just doesn't work. I tried the string from the date purchased thingy so I had added at the end and not tag so and so. But nothing. But adding the unread tag doesn't do anything either. Oh well, much of calibre is still a mystery for me anyway.