Problem with Divi Contact Form

Hallo WP Fastest Cache Team, first of all, great Plugin! But i have a Problem with it on my new side. When the Plugin is active, after a few days you cant use the Divi Contact Form of the side no more, when you click on “Send” then there comes a message that you have to load the Side again. When Deactivating WP Fastest Cache, the Contact Form works great again. Any Idea? Thank you very much

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