Open fiddler and check if requests are being sent to "Realm". If they are then you are doing something wrong.
I'm having this issue :
shadouxemule+20@gmail.com failed <Error>LinkWebAccountDialog.alphaNumError</Error>
Saving to Output.txt and copying to clipboard...
Setting Names... shadouxemule+20@gmail.com failed to set name <Error>Error.accountNotFound</Error>
EDIT : I made it, the password must contains letters and numbers (the password you specify before the XXX)
EDIT 2 : It still is creating the characters, i got an error for each one and i gotta click on "OK" for each so it's taking a long time