Climate Friendly Product Requires Poly Bag

We’ve been selling a product for three years with sales around $3 million per month. We have a climate friendly pledge product and Amazon just came back and said they’re requiring a poly bag… Which seems ridiculous. Our product has a cardboard envelope around the actual product. We also ship 15k orders D2C daily with minimal packaging issues.

We submitted a case questioning the requirement and it was denied, saying we now have to wait 90 days to submit another case.

Any ideas to get around this?