Allow special characters in usernames

How to enable non-English letters to be added, such as Č, Š, Ž.
This is most important to me when I or a user creates a profile/username. Thank you.

Please let me know if you mean usernames only, or you mean loading a font that supports these characters?

There is a problem when creating accounts and usernames. Thank you.

How to allow special characters? Thank you.

Unfortunately there’s no way to change this externally without editing the current version of the plugin, we set strict username validation in the registration form hivepress/class-user.php at master · hivepress/hivepress · GitHub