Issues with iframe using popup

Hello,

I use your plugin a lot and it has always been really great, thanks so much for making it free! I am building this new website and have installed the popup with use of the map and that works well. I also wanted another popup for the calendar and booking form for which I have iframe code from Smoobu. The iframe code works and I have placed it in a section outside of a popup at the bottom of the page, just you can see that it is working. (Although for some reason, when the popup is also on the page the calendar part shows twice). If you click the Book Now blue button at the top of the page you will see that it just loads and loads and never actually shows. Do you have any ideas please?

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