The chain: Firefox 140 made data disclosure mandatory. Our previous version declared "none", which was not accurate under the new definitions, so Mozilla disabled it. We resubmitted using the three categories named in Mozilla's enforcement notice. We then found two of those labels were wrong and removed them, which triggered a second prompt, since Firefox re-prompts on any addition even when the list gets shorter.

You're right that nothing really changed. The add-on behaves exactly as before (with bug fixes) and still runs only on Amazon product pages and keepa.com. The full explanation is now in the add-on description.