Contact Form 7 newsletters-Shortcode doesn't work

When I use the newsletters shortcode in my Contact Form 7 form, the short code in the frontend is not replaced.

Newsletters Version: 4.1.2
Newsletters - Contact Form 7 Subscribers Version: 1.1
Contact Form 7 Version: 3.3.3
Really Simple CAPTCHA (for Contact Form 7) Verson: 1.5
WordPress Version: 3.5.1