Getting Gravity Forms to set cookies to save completed info

We have a lengthy questionnaire (about 70 questions) that we would like to put up as an online form.

Many people have recommended Gravity Forms.

I learned that Gravity Forms does not save the portions that a visitor has completed. If a visitor has completed the first 3 pages of a 7-page form and somehow leaves our website, he’ll have to restart from the first page. (https://www.gravityhelp.com/forums/topic/does-gravity-save-completed-pages). The GF staff recommends using a script to set the cookies to save information.

We don’t know how to code.

1. Is there a ready-made script for this purpose?
2. Can any other form plugins set the cookies to save the information?

Thank you.