Mobile Category Display

Site URL: http://www.beerdad.co.uk

I have categories to seperate my new Pick 'N' Mix section. This displays on the desktop view, but not on the mobile view. There is some previous coding (see images) and I am wondering if this is preventing it from displaying? 

Can you share the page password?

I can't see in the partial CSS you've shared that you're hiding the categories on mobile, but in looking at another page you are hiding it for the boxes page, looks like this:

@media screen and (max-width: 575px)
.products.collection-content-wrapper .nested-category-tree-wrapper {
    display: none;
}

 You could target this to just the boxes page, or even hide it on desktop as well as it currently serves no purpose. Targeting to just the boxes page will allow it to show up on mobile on the pick'n'mix page, and if you need help styling it let me know.

Thanks Ziggy, what you suggested sounds like the right solution where the Beer Boxes page hide the categories but on the pick n mix page it was shown. I will message you the password for page.