Embedded Form Does no controls to show next week

Embedded Form Does doesn’t show the next week selectors to show next week! please see here, https://cl.ly/84b3c35e46d1 this does not show on IOS restricting calendar availability.

Here’s the live page https://fencingcallagency.leadone.co.uk/schedule

A few of us tested this out on mobile iOS and Android everything shows up correctly:

I had to use the desktop version on a mobile site in the end, when calendar is in mobile mode the control disappears