AmazonFresh recipe API issues with affiliate tag

Hi all!

I'm attempting to use the AmazonFresh recipe API: https://www.amazon.com/afx/ingredients/verify

The basic functionality works well. However, when I create a URL using the API, my tag= parameter is missing, despite passing it in the URL parameters like the API documentation states:

Optional URL Parameter for Amazon Associates: ?tag={your_associates_tag}

When I redirect the user to the resulting URL, the tag= parameter is missing. Which means I can't track or affiliate purchases :(

I've uploaded a simple example here: https://trinket.io/python3/7170bc788d -- I'd expect, based on the documentation, that the resulting URL output contain a tag= parameter.

Note that adding it manually doesn't help. Try going here and you'll see the cart, but the tag gets cleared.

Any tips? It doesn't appear that the AmazonFresh recipe API is well known or supported, I haven't got anywhere despite trying several support channels.

Thanks!

• Paul