Appointments+ shortcode breaks Divi Builder

When I insert an Appointments+ shortcode into Divi Builder the backend Editor for that page disappears.

You can see this on my Thank You page - subsite (Power of Gold) page ID = 26960

This is the Appointments+ js error associated with the issue:

Uncaught ReferenceError: Appointments is not defined
at HTMLDocument.<anonymous> (app-services.js?ver=4.7.3:4)
at i (load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery…:2)
at Object.fireWith [as resolveWith] (load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery…:2)
at Function.ready (load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery…:2)
at HTMLDocument.K (load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery…:2)

/wp-content/plugins/appointments/includes/shortcodes/js/app-services.js?ver=4.7.3

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