Event registration confirmation emails are in the English language although the site has localization.
Attendees are receiving the event registration confirmation email in English although they select the localized language preferences.
My event registration confirmation email is in English, but I chose a different language when I registered.
Webex Events (Classic)
If the host edits event email templates and sends out an invitation email, attendees will get registration confirmation emails in the English language, even after selecting localized language preferences while registering for the event. This is by design.
Localization for customized email templates is not supported.