Amazon requires you to have a Professional Seller account in order to access their API, which is how third parties, like us, communicate with them. Without this connection, InventoryLab is not able to communicate and sync data with your Seller account.
In addition, since InventoryLab supports the Amazon.com (US) Marketplace exclusively at this time, your Professional Seller Account needs to be registered to the US Marketplace.
If you're an Individual Seller but are interested in upgrading to a Pro Seller account, please refer to the following articles from Seller Central for more information and steps:
Or, if you haven't started selling on Amazon yet, please visit the following link:
Once you've signed up for a Professional Seller account, you're all set to continue with creating an InventoryLab account and connecting it to Amazon. The following articles will come in handy as you get started: