Hey,
I’d love to look at solving this problem. Would you be willing to show me what it looks like on your end in your shop so I can start looking at it?
I run a sales tax filing service specifically for Shopify, and this is a recurring problem. I understand the issue, but I want to see if someone is willing to let me look around with them so I can compare to the TikTok API and see if I could figure out a solution for sales tax purposes.