I can not paste anything in Firefox

If you can’t paste anything into Novelcrafter and use the firefox browser, make sure you have updated to the latest version (anything after April 2024 should work).

When Novelcrafter wants to read your clipboard, a little paste button will appear in a context menu, which you have to press manually to confirm it:

If you don’t click the button, a warning will appear instead, and you just need to retry pasting again.