Go here to create a Mondido account.
Verify your email address.
Go to your Mondido account: Integration → API integration and set API password:
Go to your WordPress admin area → AliDropship → Settings → Payments → Credit/Debit Cards → Mondido.
Copy Merchant ID, API password and Secret from your Mondido account (as shown in the screenshot above) and paste it to your WordPress Mondido settings: