I feel like I may be missing something here, do you have another website aside from the ebay store? If so please provide the link.
The ebay store seems to be functioning properly so I may not be completely understanding your issue.
Can you provide a link to the pinterest page where the items were used to show up?
Ok I see, are you logged into pinterest here https://www.pinterest.com/elf0245
Make sure you are logged into your pinterest account and then click the pinterest button your ebay item and see if it shows up.