I am building a Wordpress site for a company that has about 2500 classes where people can register and pay online.
There are about 30 main categories which then break down into classes.
I will need to securely keep this information and have access to it in the WP admin panel. Ie. name, email, phone#, address, class or classes registered, date of class, etc.. Whether they have paid. Invoices to the client.
Is there a good plugin for this in Wordpress?