Popup blocking

Hi,
We have started to get the following message when you try to create the pdf document:
“You are seeing this message because ad or script blocking software is interfering with this page.”
It doesn’t seem to matter what browser is used. Same thing whether Javascript is enabled or not in the settings.

If you go to this page: https://voegelinview.com/john-flory-and-expatriate-liminality-in-orwells-burmese-days/ and click the “Print-PDF” link you get that message.

The pdf print was working previously.

Any idea what is causing this?

Thank you.