How does a payment gateway work in Java?

To integrate PayTabs for multiple sellers and vendors in Magento 2, follow the steps given below:

• Get your API keys and secret keys from PayTabs
• Navigate to the Magento Marketplace or directly install the PayTabs extension for Magento 2 from PayTabs
• Setup the extension’s settings from the backend
• Configure individual PayTabs accounts for each vendor or seller
• Connect each vendor or seller in the Magento 2 backend to their own PayTabs account.

The 'Pay from CoinGate Balance' is a feature in CoinGate that enables verified users, like business and trader accounts, with sufficient balance in any in-house or main asset to use their CoinGate balance to pay for an order of a merchant

If you purchase an item using PayPal's installment payment option and receive a refund, the amount of the refund will be applied directly to your loan balance, lowering the amount you owe on the remaining installments. If the refund is greater than the remaining balance, the difference will be credited back to your PayPal account.

To send an invoice with PayPal, follow the steps given below:

• Open your PayPal account
• Press on the ‘Pay & Get Paid’ or ‘Request’ option
• Choose the ‘Send an invoice to get paid’ option
• Input the details of the customer
• Add any attachments or notes
• Review the invoice
• Hit Send

Fastlane is a feature by PayPal which makes secure online payments fast and easy. One can save their shipping and card details with Fastlane during their first checkout. Then, during future purchases, the platform will prefill the saved details wherever Fastlane is available. The option to review the details before paying will be present.

To use Fastlane by PayPal while shopping online, follow the steps given below:

• Input your email address during checkout
• You will receive an email from PayPal
• Enter the code from the email
• Review your information
• place the order