403 Get error trying to connect Amazon SP API for Orders

I have followed all the steps and made sure user had SP API access but the error persists. Any suggestion? Thanks!

Hey @luminarybrands :wave:t2:

Welcome to the Postman Community :postman:

Could you expand on the details here, please?

Are you using some documentation where you’re following those steps? What are the steps?

What does that look like in Postman?

The more information you can share, the easier it will be for someone to help you.