Mixed Content (SSL) using Pro Site

Hello Superhero!

I have installed on my site the SitePro and Domain Mapping plugins. Today I did the setup of my wildcard SSL certificated and using Mapping Domain, I choose Force HTTPS on front end pages.

Well, I want to use PayPal Checkout Pro on my site and for this, I need a very secure page, right? But, the gateway uses an non SSL endpoint to process some informations, and this is not good...

The end point of the form action have the same path that my page, but without https. If you want to see... look for source code on https://imobilix.com.br/checkout

I need to fix this! Thank you!