Problem with form

Hi

I added the form to a simple website but I seem to have issues.

The Review field is showing this content:

</p>
<p><!-- wp:heading --></p>
<h2 class="wp-block-heading">Write a Review</h2>
<p><!-- /wp:heading --></p>
<p><!-- wp:site-reviews/form /--></p>
" required placeholder="Tell people your review" rows="5">

How do we fix this? Thank you.

The page I need help with: [log in to see the link]