Slideshow stopped working
Many moons ago, I put a slideshow onto my client's homepage, which is built as an iframe - that's how long ago it was! It recently stopped working, and I have no idea why.
Here's the page that contains the slideshow (which currently only has one image): http://www.nourishhotyoga.com/index-slideshow-cms0.php
And this is the page that has the slideshow embedded as an iframe: https://nourishhotyoga.com/index1.php
As you can see, the iframe doesn't show up on the page, but it does as a standalone page.
Does anyone have any suggestions, please? Does it have anything to do with http and https?
Deborah is exactly right - browsers will no longer load insecure resources (HTTP) on a secure page (HTTPS) - this includes things like iframes. Updating HTTP to HTTPS will very likely fix the issue.