Please note, wpForo itself doesn’t enforce the Latin-only username restriction — the restriction comes from WordPress core. When a user registers, WordPress controls the username sanitization and validation, and by default, WordPress only allows Latin (ASCII) characters in usernames. 

Please read this support topic:  https://wpforo.com/community/how-to-and-troubleshooting-2/use-illegal-characters-for-username/?utm_source=chatgpt.com

The same question is discussed there.

1. Is there a recommended approach from wpForo for Chinese forums?

   • For example: English login username + Chinese display name

Please read this documentation: https://wpforo.com/docs/wpforo-v2/settings/member-profile/#members-url-structure-and-member-nickname

Message:

Hello wpForo team,

I’m running a Chinese-language community forum (China / Asia users).
Currently, users cannot register using Chinese characters as usernames — registration fails if the username contains Unicode (e.g. Chinese).

I understand that WordPress core traditionally limits usernames to Latin characters, but for a Chinese forum, many users expect to use Chinese names.

I’d like to ask:

1. Does wpForo officially support Unicode / Chinese usernames?

2. If not, is this a design limitation or a security consideration?

3. Is there a recommended approach from wpForo for Chinese forums?

   • For example: English login username + Chinese display name

4. Are there any hooks / filters planned or available to safely allow Unicode usernames?

I want to keep the forum stable and secure, so I prefer an officially supported solution rather than custom hacks.

Thank you for your guidance.

Best regards,
Simon
Forum: https://forum.168my.my