I have found the solution on my own. There was a problem in height of the product in css enviroment. The height was 0px. Check this out soon at the next update.
I have done the first steps to check it and I am waiting for your answer. Still not working.
I have just start using Contact Form 7 skins with Visual Composer and it works just wonderfull.
Can I add more than one price at the same date? How can I do that?
https://wordpress.org/plugins/booking-system/
