Yuzool - Box Stack

I just bought the Box 3 stack - but cannot figure out how to get the layout of thumbnails for which I bought the stack (see attached image).

What have I missed? I’d hate to think Yuzool sell both a ‘Box’ and ‘Box 3’ stack…

ALSO - the Box 3 stack does not provide an image title when you hover, now when the image blows up. This defeats the entire purpose of the stack for me, as I am using this for clients to select from a colour swatch.

AND, I’ve tried to create a duplicate Box on the page, and it behaves completely differently. Although it is a Copy/Paste of the one above, the size of the items stays at 350px, not 90px per the first. What the…?

https://www.evermorealbums.com/SITE/leather
(disregard the poor formatting of the temporary page, otherwise)

Thanks in advance!
Andre