can`t login in Google Video Uploader

1. I applied to the program but I cant login in Google Video Uploader
:/
"unable to login. pleas check your email/pass and make sure your
network connection is up"
I`m sure that email and pass is good !
so it isnt problem with my network connection becouse I can login into
other google account:/
but I wanna to use the first one:)

could someone help me?