Not responsive – iframe

Hi there,
I chose your plugin because it allows for the iFrame to be displayed in the lightbox and because it’s supposed to be responsive. Works great on my laptop, but I can’t scroll the content of the iframe on my iPhone. Help?

Also, the Close button is nowhere to be seen. How can I get it to appear?

https://ww.wp.xz.cn/plugins/responsive-lightbox-lite/