my paypal account is not connecting to my shopify

[kirvish]

my paypal account is not connecting to my shopify store even i am not able to get API for this its showing error

[MTS_Andre]

Hi, In order to check your Classic NVP API Credentials (Username, Password, Signature) please follow these steps:

- Log in into your PayPal account (www.paypal.com for LIVE, while www.sandbox.paypal.com for Sandbox)
- Click Profile
- Click Profile & Settings
- Click My selling Preferences.
- In the Selling online section, click the Update link for the API access item.
- Click "Manage API credentials"