I'm not familiar with that site, but are you printing from a regular web page, or a PDF they provide? I'm asking 'cause: Firefox 103 has a known issue printing PDFs with embedded images on Mac OS: the images are scaled too large so you only see a portion of them within their allotted space. There is a bug on file with the developers already, so I'm hoping for a fix by next month's release of Firefox 104. Until then... I have not yet learned of a workaround. For now, I think it's best for Mac users to print PDFs from Preview, Acrobat, or Safari until this is sorted out. If you need to switch your default handling from viewing in a tab to launching in one of those programs, this article has the steps: [[View PDF files in Firefox or choose another viewer]].