Display name restriction
Hi there, I wonder if there is a way to prevent users from choosing display names that are login names of existing users. I mean, for example, that I would like to forbid users to choose “admin” as display name in order to avoid confusion and/or potential annoying situations.
I can’t find the desired option on the admin screen as well as I can’t find a useful filter on defaults.bb-filters.php.
Thanks in advance.
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