Hey Wabimedia,
please try using the theme’s built-in contact form generator, it is also based on Contact Form 7 by the way ;) please see pages 4 and 5 of the theme manual on how to insert the form. The built-in form is pre-styled to better match the theme, and the button does react to the settings you’ve mentioned. Please let me know if you have any problems implementing this!
Sincerely,
Andrii / Satori Studio