Form Fields

Hello,
I have created a conditional form with your plugin that some fields should not be displayed on page loading. But if you go to the page below, you will see that all the fields are displayed at the beginning of the page load.
Also, the loading speed of the form is very slow.

Please watch the video below:
[video src="https://uupload.ir/view/dyc6_khodroland.mp4" /]

Or you can test it yourself at the following link:
https://www.khodro.land/product/karshenasi-khodro

How can fix these problems?

Thanks