Nextcloud Welcome Email Help


I am having an issue where I resend the “Welcome Email” to a user but when the user receives the email it shows their “username” as their “User ID: XXXXXX-XXXX-XXX-XXXXX”. I am needing to change that to their username or email even. Does anyone know how I would go about doing this?

Nextcloud Version: 15.04
PHP: 7.3
User Base: LDAP