Squarespace

Add a Code block where you want the widget and paste:

<script src="https://rentx.al/embed.js" data-rentx-partner="your-partner-id"></script>

Two Squarespace specifics:

1. Custom code requires a paid plan. On the entry-level plans the Code block is unavailable, and there is no way to install the widget. Upgrading is the only route.
2. Code blocks do not execute in the editor. You will see a placeholder. Preview or publish the page to see the real widget.

If the block refuses the script tag, or the widget never appears on the published page, the iframe version goes in the same Code block — but its search button does not work, so read that page first and talk to RentX.