not able to use language cloud

Hello, 

i have a problem when i use sdl trados i am not able to use language cloud. 
when i try to sign in using the green sign in key in the top of the program it give an error (Package template with id 577380eaa.................112 not found. after that a new window appear and after 20 sec. my name appears but still the green sign in key appears at the top. i am trying to use the cloud to translate from turkish to arabic but unfortunately it is not working please help me. 
Thanks