I have a potential website project that I may be working on that is currently built with Wordpress. The site uses Gravity Forms with the Authorize.net plugin to allow customers to pay invoices. They can use a single form to make a one-off payment or they can create an account and have their information saved for future payments. All credit card and personal information are stored with Authorize.net.
I will be rebuilding the site with ExpressionEngine 4 and need to recreate the functionality mentioned above. Without having to learn the Authorize.net API and building something from scratch, are there any existing plugins for EE that could make the above happen relatively painlessly.
Thanks for any help.