We have standardized the format of usernames to include only alphanumeric characters (a-Z, 0-9) in a lower case format.
If your username contained non-alphanumeric characters (for example: アンナ) our system will automatically change it based on your email address.
Please note that you'll still able to change your username under the “Edit Profile” section of your Viki Account, as long as the characters are alphanumeric.
You can also continue to log in with your email address, Google +, Rakuten or Facebook account.
If you have any questions or experience any issues logging in, please let us know by writing in to the Help Center.