Using for car booking

Hello poooow, given that you could use the plugin correctly and I still have problems with processing the reservation, I wonder:

1. What version of WordPress you used?

2. If you can tell me I’m doing wrong, they really are very specific and simple steps and still not I can do it.
a) Create a page (reserve) which will create the reservation form using the button with a red letter “e”
b) Set the URL of the form to the widget to point to the booking page.