Help Needed - Dangerous Goods Documentation / ASIN Inconsistencies Across EU Marketplaces

Hi everyone,

I'm really hoping someone here can help because I'm at a total loss and Amazon Seller Support hasn't been able to resolve this for me after a month of trying.

I have a listing that requires Dangerous Goods documentation. I provided both the exemption sheets and the Safety Data Sheet as required. However, I'm being told that my ASIN details are "inconsistent across EU marketplaces."

The strange part is, I only actively sell on the UK marketplace — I don't sell on the others.

Still, I tried to update all 10 EU marketplaces to match exactly, but Amazon somehow made unexpected changes:

Some ASINs were turned into parent listings, others into child listings,

Information is not consistent, even after I corrected it.

I am the sole brand owner, and I should have full rights to change my listings. However, Amazon won't let me change the information, even on my UK listing. When I try, they just ask if I have “suggestions for the brand owner” — even though I AM the brand owner!

Here’s what I’ve tried already (none of it has worked):

Using Build International Listings to sync,

Deleting SKUs and relisting,

Updating using flat file templates.

Seller Support has been extremely frustrating — mostly copy-paste responses, repeated promises that it’s been "escalated," and then days later I just receive another useless generic reply. It's been dragging on for over a month, I’ve lost a lot of money, and the stress is unbelievable.

If any experienced sellers or even Amazon forum mods can help guide me through fixing this, I would be incredibly grateful.

Thank you in advance for any advice!