STEP 1 : Create your user account through Subscription service
STEP 2 : Go to login page
STEP 3 : Clic on "Reset password"
STEP 4 : In your mailbox, clic on reset password link you received
STEP 5 : Change your password
STEP 6 : Clic again on reset password link you received
=> You obtain a screen with a problem on i18n key