330 units a day. Then 100. Nothing changed on the account — no suspension email, no policy warning, no listing error. Just the number falling, and nobody able to say why.
If you sell on Amazon you know this feeling. It is not a slow decline you can plan around. It is a good product, a proven listing, and suddenly a third of the volume is gone. And because it is usually your best product, the whole business feels it.
They open a case with Seller Central and start guessing. Is it an adult flag? Did someone change the listing? Is there a hijacker? Is it a blackhat attack? Did the category change?
Every guess is a new case, a new rep, another 24 to 48 hour wait. If you don't know the exact language Amazon's teams respond to, you get a copy-paste reply and go back in the queue. That is how a three-day problem quietly becomes a three-week problem.
When sales drop overnight, the cause is almost never the dramatic thing you are afraid of. It is usually two or three small things that happened days earlier and only showed up in your numbers today.
A real example: a minor listing edit seven days before the drop — small enough that nobody catches it on a manual check. Next to it, part of a PPC campaign had quietly stopped spending its budget. Next to that, the product had gone unavailable from some fulfillment centers. No suspension. No attack. Three boring, fixable things stacked on the same ASIN at the same time.
Pull sessions and unit session percentage for the last 14 days. If sessions fell, you have a discovery problem: ads, ranking, or availability. If sessions held but conversion fell, the page or the offer changed. This single split eliminates half the possible causes in about two minutes.
Look at the BSR of five or six competitors over the same window. If the whole cohort drifted, it is seasonal or category-wide and your listing is fine. If they held while you fell, it is specific to you — and worth acting on today.
Not "does the listing look right" — compare every field to its value seven days ago. Title, bullets, images, A+ content, category, price, coupon, Buy Box owner. Small edits are the single most under-detected cause because the page still looks normal.
A campaign can read "enabled" and still be spending nothing. Compare daily spend and impressions against the prior fortnight. A campaign that went dark starves the organic rank that the paid traffic was propping up, so the damage keeps compounding after the spend stops.
Buy Box can be held and inventory can read positive while the product is unavailable from several fulfillment centers. The delivery promise slips by a day or two in those regions and reachable demand shrinks quietly.
Hijackers, policy flags, review attacks and category changes are real, but they are rare, and each leaves a visible trace. Check them once the boring causes are ruled out — not before.
Each step above is answerable from data you already have, in minutes, without opening a support case. The dramatic causes are the ones that require Amazon's help and the long waits. Checking them last means you usually never need to check them at all.
And when you do find the cause, expect more than one. A drop big enough to notice is usually a stack: something weakened discovery, something else removed the support that was compensating for it.
It tracks around 300 listing, PPC, inventory and competitor attributes every day and tells you what changed, when, and what to fix first.
See how it works