I'm opened a shop on Amazon. I'm created the seller Id, Marketplace and token. I want to create amazon accounts in Odoo amazon connector in Odoo 14 test database. I'm getting an error. I'm trying to do the operation on the Odoo14 test database.Can you help me with this?

 User Error: The authentication to the Amazon Marketplace Web Service failed. Please verify your credentials. AccessDenied: We cannot process this request because your account is still being setup or there is an issue with the account. Please log in to Seller Central for more details.