iFrame doesn't scroll on iOS

Site URL: https://www.crowmartialarts.com.au/contact

Hey Guys,

I'm a bit stuck with this one so I thought I'd share it with you guys to see if anyone's come across it before or has any suggestions.

Basically at the bottom of our "Contact" page we're using an iFrame to display a Google Slide onto our website (to display our timetable). When viewing this page on iOS if a user scrolls down to look at the timetable it essentially traps them on the timetable.

Regardless of which direction the user swipes the page doesn't scroll. Obviously this can be counter by zooming or scrolling at the top or bottom of the phone that is not displaying the timetable but that isn't a very user friendly solution.

Any ideas on how I could resolve this?