Thank you for explaining your case, you can see that no matter what the product category is, Amazon has got it wrong and do not understand the intricacies of brand ownership versus license permissions and who is an authorised brand user with permission from the brand owner.
Having spoken to brand owners, one of the them was the Vice President of online operations for a large character produtc range and he told me that they had tried with Amazon, but they were not responsible for creating listings and they could not issue LOA's to individual sellers when the licenses for the products made were held by the manufacturer of the product and the distributor.
About 10% of their product catalogue was in the Amazon catalogue and 90% could not be listed as no seller could get a LOA to sell the brand, the manufacturer wanted to sell the products through the distributor and the distributor wanted to supply the Amazon sellers, but none of them were able to create the necessary listings as nobody could secure the LOA from the brand owner.
If you add this major issue to the many other issues that exist on Amazon, it probably represents a loss of revenue somewhere around £200 million a year for Amazon as they simply refuse to see the actual case in most instances and seem to always run with what they think is right and nobody can tell them otherwise.
Even though Jeff Bezos is now not directly involved with Amazon, isn't amazing that he can send a rocket into space and yet cannot get a decent seller support, cannot get a correct catalogue, where 30% has errors and his brand and catalogue team dismiss about 50% or more of the possible listings on Amazon by refusing to accept legitimate LOA's from licence holders.