In order to add your Amazon marketplace to AMZFinder, please check the following 4 steps:
Check Marketplace Management dashboard
Login to your AMZFinder account and click on the “Marketplaces” button in the navigation bar. After entering the new page, click on the “+Add Marketplace” button on the right side to add your Amazon marketplace.
Choose Your Marketplace
Choose the marketplace you would like to add in the drop-down menu and input your store name.
Sign in Amazon seller central
Sign in your Amazon seller central on the pop-out window, and follow the lead on the new page to finish the store authorization.
After finishing the above steps, return to the page and then click to submit it. Then, you have already connected your store successfully!