Magento 2.0.18 is the final 2.0.x release. After March 2018, Magento 2.0.x will no longer receive security patches, quality fixes, or documentation updates. To maintain your site's performance, security, and PCIPayment Card Industry: Refers to debit and credit cards and their associated businesses. compliance, upgrade to the latest version of Magento.
PayPal is a global leader in online payments and a fast and secure way for your customers to pay online. With PayPal and Magento Open Source 2.0, you can accept payments from all major debit and credit cards, and PayPal account holders. Since customers don’t even need a PayPal account to pay with PayPal, both you and your customers can get extra convenience without extra effort.
The selection of available PayPal solutions varies by merchant location. To learn more, see: PayPal Payment Solutions. PayPal Express Checkout and PayPal Payments Standard can be used in all parts of the world.
You cannot have more than one PayPal method enabled at a time, with the exception of PayPal Express Checkout. PayPal Express Checkout can be used in combination with other PayPal payment methods. except PayPal Payments Standard. PayPal Payments Standard cannot be enabled simultaneously with any other method, including PayPal Express Checkout.