Amazon keep denying application to sell for a brand

I’m reseller and I purchase products from authorised distributors. I’ve been approved by Amazon as seller to sell a product in a category for one brand. I submitted approval for another brand for the same category and they keep denying. I’ve uploaded invoice from distributor, I’ve purchased 10 products both these are the requirements from Amazon. I’m not sure why they keep denying application/ When I appealed I got just vanilla response.

Does anyone know what other document do they need apart from 10 or more item purchase + invoice from distributor?