Off Canvas Menu Not updating

Hi,
I have an off-canvas menu for mobile only.
I have tried to update it and it is not updating. I have cleared and deactivated any cache but wondered if it is something to do with using a child theme?

I created a new menu and allocated it thru the Customizer to the Off Canvas Menu. Within the customizer (left side of screen) it recognizes the change but it does not show any change on the page (right side). I have then published it anyway but still no difference having cleared cache etc

Currently the menu says:
Home
Guides
Discover Crypto
etc

The updated menu (called MIXED OFF CANVAS MENU) should say according to the customizer:
BLOG Dashboard
with subheadings of Guides, Resources, Crypto Humor
DISCOVER CRYPTO Dashboard

What have I forgotten to do?

Thanks,
Rob