Step 1: Setting--Order & Shipping--Shipping Carriers--Delivengo
Step 2: Log in Delivengo--Mon Compte--Afficher la cle API--get the API key
Step 3: Fill Custome name--Fill API key--Click"Connect"
Step 4: After authorized to 4Seller--Check authorized record and status.
Any problem just feel free to contact us: support@4seller.com