Custom Opt-In & Dynamic PDF Certificate

We want site visitors to register by email or Facebook with the same function as ForensicHealing.com. As with [login to view URL] they are automatically registered with an Infusionsoft (CRM) and Customerhub account (Member Site). But this time we use Infusionsoft API (Uses XML-RPC standard) and a our own database to store data instead of a standard Infusionsoft webform. Once the user logs in we offer a free download of a personalised certificate with a choice of A4 or US Letter size. This is achieved using an AJAX call to Customerhub to establish logged in user, which links to Infusionsoft user and we use their API to dynamically add data to the pdf. There's a certificate example attached The certificate is high resolution (300dpi) so the user can have it professionally printed. It is also has security encryption - they can print high resolution but user cannot copy/change the contents.