Menu – Mobile view only issue

Link: https://banded611.com

Issue: On the mobile/media views the navigation is pulling up the children with a -then child name – this is strange because it appears to be functioning correctly on desktop version. I’d like the children to be hidden then appear when clicked on – what am I missing and how do I go about doing so?
Thank you very much and this really is a great theme this issue non-withstanding!