Streaming live at 10am (PST)

HSTS subdomain question

I’m using SEMRush to perform a site audit on a new project hosted with webflow. My preferred domain is I’m receiving an message error with SEMRush that my subdomains and don’t support HSTS. I’m okay routing traffic away from these domains…My question is, do I need to set it up? and where can I find instructions on doing so?

Here is my site Read-Only: LINK
(how to share your site Read-Only link)