New Covers

Well now, almost halfway through the month. What have I achieved? Not much.
Fiddled with all my book covers, edited 'In the Valley' to add in a linked Table of Contents, so now you can click on a story in the list and whizz, you are on the first page of that story. Click on the story title/header inside the book and you go back to the Table of Contents.
I took 'Heavy and Light Tales'ebook version down from Amazon. None have sold. Maybe I should split the stories in that to try as freebie short stories, or perhaps simply try a better cover and some directed marketing. I dunno.
After the first week of September, 5 had sold of each of the Sherlock books in the USA,1 of Voodoo Dolls in Germany, and 1 in the UK. Then everything stopped. Just 1 copy of Voodoo Dolls has sold all this week, in the UK.
I don't know if this was because I changed the covers so Amazon froze sales for a day. I didn't think they'd do that, since the new cover was up on the site in a couple of hours. But now I'm thinking that has to be the reason all I have are dropping rankings. Once momentum is lost, it is simply gone, it seems.
Lastly, I tried a site which 'animates' gif images - or more precisely, they rotate a series of images you supply. I have added their code to this post. Curious to see if it works.