Ziya You have to allow JIT for the site's settings.
EDIT:
Found some helpful and relevant comments on this topic for you just now.
On January 27, @Novalissoide mentioned that it was working for them:
https://discuss.grapheneos.org/d/30746-printing-password-protected-pdfs-doesnt-work-with-pdf-viewer/9
And earlier, on December 29, 2025, @Novalissoide provided the answer from his experience on how to get it working in Vanadium https://discuss.grapheneos.org/d/14653-pdf-editor/18
Allow the site Javascript-JIT, the settings icon leftmost in addressbar.
Vanadium permissions (longpress Vanadium icon, 'App info');
Music and audio
Photos and video
Notifications
Also be adviced that the BentoPDF site takes some time for it to react, and this goes for every single user-action. Navigation on the site, happens with a lag, tapping any button, some of them has a several seconds lag. Do a simple test by tapping 'Pdf from text', choose option 'type text'. Be patient, it will execute with a delay.