Step 1: Sign up and log in SourcinBox APP.
Step 2: Open Manage Stores section.
Step 3: Click "Add your store now" for Shopify and you will be directed to the Shopify App Store.
Step 4: Click the button "Add app".Then you will be redirected to Shopify to authorize Sourcinbox. Click "Install app" to connect successfully.
Step 5: Log in to your sourcinbox account again, and you will see your store in the "Manage Stores" section.
If you want to add other stores, please check here.