1. Login Amazon Seller Central, open User Permission page(must be main account)
North America: https://sellercentral.amazon.com/apps/manage
Europe: https://sellercentral.amazon.co.uk/apps/manage
Japan: https://sellercentral-japan.amazon.com/apps/manage
Australia: https://sellercentral.amazon.com.au/apps/manage
2. Click "Authorize New Developer", fill in with follow info:
Developer Name: QMT
Developer ID: ↓
North America:5905-0151-5462
Europe:3665-3516-3001
Japan:0863-9722-4106
Australia: 9898-4407-2315
3. Tick MWS Agreement,and Click Next
4. Copy Seller ID and MWS Auth Token to the form