i want to Deactivate specific key of a user

user is living foreign land so i have to deactivate offline

so i followed the leading but it doesn't work

so i go to the menu of 'can't Deactivate online? -> Deactivate offline' 

i choose the one which i want to remove it and select the 'Generate Deactivation Authorization ticket' button

as you see on the right above picture

i click the 'Deactivate offline ' and i copied 'Deactivation Authorization' from website and paste to the trados program

i get a 'Deactivation Certificate code' from it and i paste again to the website where the ''Deactivation Certificate' is need it from.

but error occured. 

i can't remember the error log. but it's kind a "your computer is already Deactivate" or something.

please. solve this problem! (i have a Unique Activation ID that what i want to Deactivate)

F.Y.I

you wonder " did he just said  "user is living foreign land so i have to deactivate offline" ?  do you got his  'Deactivation Certificate' ?" 

the answer is "NO"

so i have tried this same process to user who is next to me ( Deactivate offline-> Generate Deactivation Authorization ticket ->Deactivate offline ' and  copied 'Deactivation Authorization '->Deactivation Certificate code -> paste it  blah blah blah)

and i got Exact same result.