Iframes do not display the guestbook on my site.

***

WARNING...Modern web browsers and web servers no longer allow
embedding most links into your website using IFRAME or similar mechanisms.

Unfortunately recent changes to browsers and web server will not allow embedding a remote website in a web page.  This use to be a favorite way for hackers to force feed viruses and malware to web site visitors.

See the following website for more info...

https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Frame-Options

***