Nav and Bottom Sticky Modal won't stick on mobile

Design help General
#1

Hi all,

For some reason, the nav and the bottom sticky modal won’t sticky anymore on tablet, phones, and below. Please advise. Thank you!

Here is my site Read-Only:

https://preview.webflow.com/preview/mushroom-marketing-website-01?utm_medium=preview_link&utm_source=designer&utm_content=mushroom-marketing-website-01&preview=19a2b84186638b7f8c07a5fc61f33297&pageId=635302caff883206bb891ca2&workflow=preview