Nitro does not run

[Ray John]

I have only been using Nitro PDF Pro (fully paid for) for a couple of weeks. This is on a PC with Windows 10. Now, when I start it, the logo window runs but after half a minute disappears and nothing else happens. I cannot see any way to contact Nitro themselves which is hardly satisfactory. Can anyone help please?

Thanks, John

[Reymund Oyong]

Greetings @Ray John

Thank you for reaching out to us through our Community Forums!

From what I understand, the Nitro PDF Pro splash screen show up after launch then disappears as if nothing happen. I have seen this behavior before when the application launches but just appear in Windows' Taskbar and it does not exhibit any error message. Please try the following and see if it helps:

1. Open Nitro PDF Pro again. 
2. From the Windows Taskbar, focus on Nitro Pro by clicking on it.
3. Press the Windows key + Left/Right arrow on your keyboard until Nitro Pro appears.

Sometimes this happens when Nitro Pro is stuck outside the displayed area on your monitor. 
You can also check if you can move the Nitro Pro window (in case it's off-screen) by holding Shift and right-clicking the Nitro Pro icon in the Taskbar and selecting, "Move". Then, continuously press the Left/Right arrow key on your keyboard until it appears on the screen.

Kind regards,