Okay, so I turned off all AMS ads, which I'd left alone for months and had gone crazy in spending. A few days after I did, everything started dropping like crazy in rank. Sales and reads started decreasing too.
So, despite it not showing up on the AMS dashboard, clearly the ads had some effect.
So, I went back in, archived old ones, started new ones, or adjusted the keywords for existing ones. One new one I created was for my new semi-permafree. It's a prequel to a completed six book series.
I chose category targeting and kept my bids low to reasonable, fairly narrow too. After a few days, it shows a ctr of 4.1% for the entire ad, with some targets up to 10% CTR.
That sounds fine, but of course, the sales are 0 since this is permafree. That said, the orders listed in the AMS ad don't seem to reflect reality at all. I have no idea what this means.
Within about 24 hours of the ad starting, my actual buys of the permafree increased dramatically. No other ads at all, except one with too low a bid to get much airplay on BookBub.
The book had been hanging between 2700 and 3300 in free ranks by itself, but now it's up at 473 in the store. Example, for one day I got 130 free-sales, but AMS showed only 4 orders.
That's a huge difference. So, how effective is this? And are these kinds of errors normal? How can I know what's working or not? Totally confused.