Go to Settings > Payment Gateways.
Under PayPal click Set up.
Provide PayPal Email ID.
Select between PayPal Standard or PayPal Business.
PayPal Standard can be used to do transactions with your customers across the globe.
Please Note:
Special characters in certain fields can stop the automatic update of payment details in Zoho Commerce.
If there are non-english characters in fields like Company Name, First or Last Name of your client or your Business Name, then follow the steps below and update your PayPal account settings.