How can I use an iFrame to display my chart?

I’ve tried following all these steps and am still having no luck – https://webapps.stackexchange.com/questions/69199/how-to-iframe-embed-a-draw-io-diagram-into-another-site

Where is your website hosted? My first impression would be that there is some sort of permissions problem – either you’re using an intermediary site like Google Docs and haven’t allowed sufficient viewing privileges or are using a content management site (like WordPress.com directly) that might limit what types of web elements you can include (although most would allow you to include iframes…) Can you provide more background info about what you are trying to do, who your host is, what versions of software are being used? Thanks