OmniQuest

Happened to me too. I can get a web page, but a displayed PDF gives me the "Due to the restrictions set by the browser, you cannot clip this page" message. Exact same wording. No clear way to adjust preferences or security settings. Firefox on Mac.

Feature to convert an image or note to a business card would be very useful. I Evernote photoed one and it was a note/image. I printed that, trimmed to the edges of the card image and tried rescanning on different contrasting backgrounds in good lighting. No luck.