EricJH, Thank you for the reply.
There is a paragraph
"TWGC.com Limited holds a website identity assurance warranty of $50,000. This means that you are insured for up to $50,000 when relying on the information provided by IdAuthority on this site. "
As you can see from the screenshot, the email "Store[at]WatchTool.co.uk" is provided by IdAuthority. I trusted this information and made a purchase. Then the problem came up, the store didn't send the items. I contacted them by using the email contact provided by IdAuthority but the mail bounced.
I think this is COMODO responsibility. The trustlogo failed to prove that the email contact is valid or not.