I have set up my Magento E-commerce website. I have a Paypal Business account but in the moment when configuring Paypal it says:
Where is Magento 2 can I find or make this username? All I have been able to find are the API settings Paypal gives, which is fine but now I need Paypal to accept my website.
You'll go into the Profile of the account and request the API Signature that you'll copy and paste into Magento 2.
From your PayPal business steps: Tools > All Tools > API Credentials, you'll select "Manage API credentials" under NVP/SOAP API integration (Classic)
You can configure Paypal for magento2 by login to magento admin Then select
Stores => configuration => Sales => Payment Methods
But before configuring on magento admin, you need to login to your paypal account to request API credentials
You can found very details steps on my blog
