How to get shop working in other themes

[supremehub]

Hi my name is samuel

My forum www.supremehub.com
I installed shop mod 3.0
and i modified the Display.template.php
as shown the above
I am using google theme http://custom.simplemachines.org/themes/index.php?lemma=1286
It shows in the profile but not in posts

[faldegort]

I have install the forum shop without problems, but it seems that all the items i make or pets, are only visible in the default theme. How can i fix that?