Smoke, what VNC do you use? Is it TightVNC, RealVNC and so on?
This could be VNC problem, not PocketCloud. Please try to reset your password on VNC.
Right Click on VNC icon on your task bar > Configuration > Under SErver Tab click Change on Primary password. After you retype your password click OK
If you are sure that you are entering correct VNC password on PocketCloud that you used on TightVNC, then I have another question:
How difficult is your VNC password. Does it contain capital letters, special characters or digits?
Could you please change your VNC password to something very basic (like 1234 or abcd) just to see if it will work on PocketCloud?
Please let me know if it worked.
I bet that you are having the same problem that I am having. There is a bug in the latest version of PocketCloud when you try to use secondary characters on the keyboard.
I have a thread open with lots of views, but I have not received any support yet:
There is a work around.
If you use letters and special characters separately then you won’t have this problem. Basically you don't have to press and hold the latter to get secondary character option.
Use letters keyboard to enter letters and then change to digits/special characters keyboard to use digits or special characters.