Issue with Listing product (Gs1 errors)

I have been trying to list a product on Amazon for half a year and it still results in the same issue.

I have a brand name that is different then my company that owns the gs1 barcodes yet I send the website indicating that the brand is owned by my company through the official website of my store.

They keep asking me for proof of affiliation between my brand and company yet I sent them that.

What do I do and send?