Hey! It seems like PlayFabClientAPI.AddUsernamePassword returns "Invalid Input parameter", when either the username or the first part of the e-mail address contains a dot (e.q. john.doe@email.com). I didn't find such a restriction in the documentation, is it a bug? I am trying to call this from a Unity project.
The dot symbol in username is not allowed, it's required to be alphanumeric (A to Z - upper or lower - and 0-9). Please refer to this thread: https://community.playfab.com/questions/5371/legal-characters-for-usernames.html
However, according to my test, using the dot symbol in the first part of email in PlayFabClientAPI.AddUsernamePassword reproduces no issue. Could you please use a legal username and test again? If it still reproduces the error, please let me know.
Sorry, you are right, I made a mistake while testing, seems like removing the dot from the user name solves the problem.
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