Add the widget to WordPress

You need a published widget first. WordPress often strips <script> tags from posts and widgets. On the widget page, copy Iframe (WordPress-safe) for an inline form.

The iframe always shows the form itself. It does not open a modal over the page or a floating bar.

Inline form on a post or page

1. Edit the post or page.
2. Add a Custom HTML block (block editor) or open the Text tab (classic editor).
3. Paste the Iframe snippet.
4. Update the post.

Place the block in the body, or in a reusable block you drop into several posts.

Sidebar or footer

In Appearance → Widgets (or the site editor for a block theme), add a Custom HTML block and paste the Iframe snippet. Save.

On WordPress.com, Custom HTML is available when your plan allows it. If the editor removes the iframe, paste it as a Custom HTML block on a self-hosted site, or use the Script method below.

Modal or floating bar

Those layouts need the Script snippet, not the iframe. Post content will usually strip it.

Paste the Script snippet in the site footer so it loads on every page: a child theme footer, or a plugin whose only job is header and footer code. After it loads, the script opens the modal or bar on click, delay, scroll, or exit intent. Closing it hides it for the rest of that visit.

If nothing shows

Confirm the widget is Published. In the editor, make sure you used Custom HTML, not a paragraph that displays the tags as text. View the public page while signed out.

Readers still confirm from their inbox.