This content is not WordProof

Hi WordProof

After the bulk Timestamp, most WordProof badges show: This content is WordProof

But the WordProof badge with a few articles still shows the following:

“This content is not WordProof

Content has changed since the last timestamp

The website has updated the content of this page since it was last timestamped on the blockchain.”

My question is as below.

After the bulk Timestamp, the content of the article has not been modified.

Why it still appears: This content is not WordProof

Thank you.