Hi @Pesky_UK,
I’d just like to add a further comment. While NoMachine intentionally blocks pasting at the login screen for security reasons you could try to use a client-side macro that types the text for you after pressing a hotkey. Apps that should do the trick depending on your OS:
Windows: AutoHotkey, PowerToys, Pulover’s Macro Creator
macOS: Keyboard Maestro, BetterTouchTool, Karabiner-Elements
Linux: AutoKey, xdotool/ydotool, Espanso