I noticed when submitting a user registration form that the response message for a username which already exists displays as "Your username already exists."
Is there a way to change this? or is this coming from WordPress?
Currently, it is not possible to change the error message Your username already exists.. But you can use a translation plugin to translate this message to another language as well.
Find it in the file /mb-user-profile/src/User.php line 80.
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