Custom Code works in Wix but not squarespace

Hi there,

I"m helping someone get a site up and running to link in with Guesty.com - a 3rd party software for booking holiday rentals.  I've added this code block which works well in Wix, but doesn't display well in squarespace.  Does anyone know why or what I can do to display well?  Guesty have given me this code, but said they won't support as they don't use squarespace - and I don't want to use Wix - any help would be greatfully received.  The code is just for a search bar with a calendar.

Many thanks

<div id="search-widget_IO312PWQ"><script>!function(e,t,a,n,c,r){function s(t){e.console.log("[Guesty Embedded Widget]:",t)}var i,d,l,o,y,m,g,h,p,u;n&&(i=n,d=t.getElementsByTagName("head")[0],(l=t.createElement("link")).rel="stylesheet",l.type="text/css",l.href=i,l.media="all",d.appendChild(l)),o=function(){try{e[a].create(r).catch(function(e){s(e.message)})}catch(e){s(e.message)}},h=!1,y=c,m=function(){h||this.readyState&&"complete"!=this.readyState||(h=!0,o())},(g=t.createElement("script")).type="text/javascript",g.src=y,g.async="true",g.onload=g.onreadystatechange=m,p=g,(u=t.getElementsByTagName("script")[0]).parentNode.insertBefore(p,u)}(window,document,"GuestySearchBarWidget","https://s3.amazonaws.com/guesty-frontend-production/search-bar-production.css","https://s3.amazonaws.com/guesty-frontend-production/search-bar-production.js",{"disableCities": true, "siteUrl":"airpeaceofmind.guestybookings.com"});</script></div>