Buy box / featured offer issue

[uman786]

Yes, someone else had the same problem:

Buy Box Suddenly Disappearing from Entire Inventory and Rotating Between Marketplaces — Any Explanation or Fix?

Hello everyone, We’ve been experiencing a very strange Buy Box issue that’s severely affecting our sales performance and stability. This is not about one or two ASINs, it affects our entire inventory at the same time. Here’s what happens: The Buy Box rate is around 80–90%, and then suddenly drops to 0% across one or more marketplaces (for example, Germany and Belgium). At the same time, the Buy Box appears again on other marketplaces (for example, Spain or the Netherlands). After a few days…