Embedded HTML doesn't work on phone?

Hi Bubblers,

Anyone embedded a Bubble app/page (mine happens to be a form, with a button that adds to the database) on carrd.co within an HTML iFrame and had issues with a Bubble workflow not working?

The form loads perfectly on carrd.co on desktop (Windows with Chrome) and phone (Samsung) and the form works on desktop (ie it creates a new thing), but when I click to save the form on mobile it runs through the workflow, showing the alert at the end, but doesn’t actually create anything in the database?

I get the below on my phone only:

Any help greatly appreciated!