Press F11 on your keyboard. This exits full-screen mode, which hides the menu bar. If that doesn't work, try F9 or F10 (depending on your version).
If all else fails, contact Nitro Support — they’re usually quick to respond. nitro pro menu bar missing
If nothing works, go to Control Panel > Programs and Features , select Nitro Pro, and choose Repair . Still missing? Uninstall and reinstall the latest version from your Nitro account. Press F11 on your keyboard
Close the application completely, then reopen it. Sometimes the interface just glitches. go to Control Panel >
Hope this helps! Let me know if you’re using a specific version (e.g., Nitro Pro 12, 13, or 14).