The following payment methods are available to your application to accept payment with the Web Payments SDK: Card Payments (3D Secure 2, PSD2 and SCA), Digital wallets: Apple Pay and Google Pay, Afterpay/Clearpay, ACH Bank Transfer.
Read more about Square Web Payments https://developer.squareup.com/docs/web-payments/overview

Square Web Payments is SCA-ready

In September 2019, new European regulation will begin requiring Strong Customer Authentication (SCA) for many online payments from European customers to European businesses. Impacted businesses will need to provide an extra layer of authentication at checkout to help keep their customers safe. Checkout fully supports SCA—including exemption logic—and ensures that you only ask customers to provide additional authentication when strictly necessary.
Square Payment Form provides a secure, PCI-compliant, customizable payment experience for accepting debit, credit, or digital wallet payment cards as the first part of a web payment solution.

Plugin supports multi-currencies
Plugin supports Authorize, Capture, Refund and Void methods
Plugin supports all existing checkout plugins and checkout methods
Plugin has protection against twice payments (fast click on button "Pay")

We have two plugins for Square: Square Hosted Checkout and Square Web Payments.

If you want to use Apple Pay you need to validate your domain. Use this plugin for it.

P.S.

This payment method doesn't support Recurring Payments.

Not registered version is fully operational. It has only one limitation. You can do 100 payments in unregistered mode. You can try it free.

Compatible with NopCommerce 4.60, 4.50, 4.40.

How to install and configure the plug-in.