In most cases the code is fine and you are looking at it from the wrong place. Squarespace deliberately disables embedded scripts while you are logged in and editing, so injected code that works perfectly for visitors appears dead to you. Log out, open the page in a private window, and check again before changing anything.

A genuine Squarespace platform outage is the least likely explanation, despite being the first thing everyone checks. Open your built-in yoursite.squarespace.com URL.

Most "domain not connecting" cases are one of two things — the records haven't finished propagating yet, or an old record left behind at your registrar is still answering for the domain. Squarespace needs four A records on the apex, one www CNAME and one verification CNAME.

In most cases the form has no storage destination. Squarespace requires at least one — a mailing list, an email address, Google Drive, Mailchimp, Zapier or the Contacts panel — and without one, visitors physically cannot submit.

In most cases your CSS is fine and the selector is wrong. Squarespace 7.1 renames and restructures classes between sections, and Fluid Engine writes inline styles that beat anything in your stylesheet.