"User not found" error message

"User not found" error message

Hi,
I downloaded and installed Vingo on my Windows 10 laptop yesterday, created an account but I keep getting a "User Not Found" when I try to login, see attached.  I rebooted my laptop multiple times to no avail.  I can login the website with that same username and password without any issues. 
Does anyone know how to fix this isse?
Thanks