"Buy Button" collection showing during editing but not live (Wordpress)

[DiscoveryInvict]

As the title says, I have a wordpress website and I'm using the Buy Button feature to embed my collections there. While editing the site the collections and articles appear as they should, but the live website only shows a blank space where the collection should appear. While inspecting it shows an UncaughtSyntax error. I'm including screencaps and the link to the website and collection (it's 3 different ones in different sections, so a solution for one should work for all). It's been three days already and I haven't advanced any 😞 PLEASE HELP!

TiendaSeguridad – Calzados Discovery