There's something wrong with Pinterest tag. I asked Pinterest customer service for help and they told me that they found my website has 1. Manually added tags, 2. GTM tags, and 3. Shopify tags. They suggest me that I have to remove the other two tags. I have removed GTM tags. As for the Shopify tags， I can't find this tag on my site and I even haven't installed Shopify tags. How to find this tag on Shopify?
There's the screenshot in the Pinterest customer service reply email.