I don't know why, but the extension doesn't work for me. The Coles version works fine but not this one. Happy to send debug logs or how-so just don't know where to contact the developer or where to grab the logs

EDIT: It's worked for some items but not for others. Not sure why.
EDIT2: I think it works when you go from one product page to another and click into it (not "Open in New Tab").