@SEKIRAM Give this AI suggested info a try, please post back your results.
AI Overview
To change your Norton Forums (Community) username,
sign in to your Norton Account, navigate to Account Settings, and click the pencil icon next to your name to edit it. For forum-specific display names, you may need to update your profile within the Norton Community site directly.
Thanks for the post back. That is weird indeed, it should be the same regardless of the geo-location of the user from my perspective. Perhaps Norton support could assist? Please give them the opportunity to try, and please let us know how that works out.
fwiw ~ my Norton account Personal Information → Name https://my.norton.com/extspa/account/personalinfo
is not related to my Norton Community → Username.
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as I recall…Community Administrator can change Community Username
Community Username vs. Account Name: Your Community Username (what people see on the forums) is different from the Member Name on your Norton subscription account. You can often edit your subscription member name yourself under “Account Settings”.
Privacy: Users often request these changes because they accidentally used their real name as their community handle and want to protect their identity.